1 | |
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2 | /* |
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3 | * mhparse.c -- routines to parse the contents of MIME messages |
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4 | * |
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5 | * $Id: mhparse.c,v 1.2 2002-05-17 21:32:05 rbasch Exp $ |
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6 | */ |
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7 | |
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8 | #include <h/mh.h> |
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9 | #include <fcntl.h> |
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10 | #include <h/signals.h> |
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11 | #include <h/md5.h> |
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12 | #include <errno.h> |
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13 | #include <setjmp.h> |
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14 | #include <signal.h> |
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15 | #include <zotnet/mts/mts.h> |
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16 | #include <zotnet/tws/tws.h> |
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17 | #include <h/mime.h> |
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18 | #include <h/mhparse.h> |
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19 | |
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20 | #ifdef HAVE_SYS_WAIT_H |
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21 | # include <sys/wait.h> |
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22 | #endif |
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23 | |
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24 | |
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25 | extern int errno; |
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26 | extern int debugsw; |
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27 | |
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28 | extern int endian; /* mhmisc.c */ |
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29 | |
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30 | extern pid_t xpid; /* mhshowsbr.c */ |
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31 | |
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32 | /* cache policies */ |
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33 | extern int rcachesw; /* mhcachesbr.c */ |
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34 | extern int wcachesw; /* mhcachesbr.c */ |
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35 | |
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36 | int checksw = 0; /* check Content-MD5 field */ |
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37 | |
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38 | /* |
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39 | * Directory to place temp files. This must |
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40 | * be set before these routines are called. |
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41 | */ |
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42 | char *tmp; |
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43 | |
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44 | /* |
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45 | * Structure for mapping types to their internal flags |
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46 | */ |
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47 | struct k2v { |
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48 | char *kv_key; |
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49 | int kv_value; |
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50 | }; |
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51 | |
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52 | /* |
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53 | * Structures for TEXT messages |
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54 | */ |
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55 | static struct k2v SubText[] = { |
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56 | { "plain", TEXT_PLAIN }, |
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57 | { "richtext", TEXT_RICHTEXT }, /* defined in RFC-1341 */ |
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58 | { "enriched", TEXT_ENRICHED }, /* defined in RFC-1896 */ |
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59 | { NULL, TEXT_UNKNOWN } /* this one must be last! */ |
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60 | }; |
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61 | |
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62 | static struct k2v Charset[] = { |
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63 | { "us-ascii", CHARSET_USASCII }, |
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64 | { "iso-8859-1", CHARSET_LATIN }, |
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65 | { NULL, CHARSET_UNKNOWN } /* this one must be last! */ |
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66 | }; |
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67 | |
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68 | /* |
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69 | * Structures for MULTIPART messages |
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70 | */ |
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71 | static struct k2v SubMultiPart[] = { |
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72 | { "mixed", MULTI_MIXED }, |
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73 | { "alternative", MULTI_ALTERNATE }, |
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74 | { "digest", MULTI_DIGEST }, |
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75 | { "parallel", MULTI_PARALLEL }, |
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76 | { NULL, MULTI_UNKNOWN } /* this one must be last! */ |
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77 | }; |
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78 | |
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79 | /* |
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80 | * Structures for MESSAGE messages |
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81 | */ |
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82 | static struct k2v SubMessage[] = { |
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83 | { "rfc822", MESSAGE_RFC822 }, |
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84 | { "partial", MESSAGE_PARTIAL }, |
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85 | { "external-body", MESSAGE_EXTERNAL }, |
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86 | { NULL, MESSAGE_UNKNOWN } /* this one must be last! */ |
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87 | }; |
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88 | |
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89 | /* |
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90 | * Structure for APPLICATION messages |
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91 | */ |
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92 | static struct k2v SubApplication[] = { |
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93 | { "octet-stream", APPLICATION_OCTETS }, |
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94 | { "postscript", APPLICATION_POSTSCRIPT }, |
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95 | { NULL, APPLICATION_UNKNOWN } /* this one must be last! */ |
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96 | }; |
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97 | |
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98 | |
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99 | /* ftpsbr.c */ |
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100 | int ftp_get (char *, char *, char *, char *, char *, char *, int, int); |
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101 | |
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102 | /* mhcachesbr.c */ |
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103 | int find_cache (CT, int, int *, char *, char *, int); |
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104 | |
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105 | /* mhmisc.c */ |
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106 | int part_ok (CT, int); |
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107 | int type_ok (CT, int); |
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108 | int make_intermediates (char *); |
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109 | void content_error (char *, CT, char *, ...); |
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110 | |
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111 | /* mhfree.c */ |
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112 | void free_content (CT); |
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113 | void free_encoding (CT, int); |
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114 | |
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115 | /* |
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116 | * prototypes |
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117 | */ |
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118 | int pidcheck (int); |
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119 | CT parse_mime (char *); |
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120 | |
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121 | /* |
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122 | * static prototypes |
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123 | */ |
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124 | static CT get_content (FILE *, char *, int); |
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125 | static int add_header (CT, char *, char *); |
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126 | static int get_ctinfo (char *, CT); |
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127 | static int get_comment (CT, char **, int); |
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128 | static int InitGeneric (CT); |
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129 | static int InitText (CT); |
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130 | static int InitMultiPart (CT); |
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131 | static void reverse_parts (CT); |
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132 | static int InitMessage (CT); |
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133 | static int params_external (CT, int); |
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134 | static int InitApplication (CT); |
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135 | static int init_encoding (CT, OpenCEFunc); |
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136 | static void close_encoding (CT); |
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137 | static unsigned long size_encoding (CT); |
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138 | static int InitBase64 (CT); |
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139 | static int openBase64 (CT, char **); |
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140 | static int InitQuoted (CT); |
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141 | static int openQuoted (CT, char **); |
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142 | static int Init7Bit (CT); |
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143 | static int open7Bit (CT, char **); |
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144 | static int openExternal (CT, CT, CE, char **, int *); |
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145 | static int InitFile (CT); |
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146 | static int openFile (CT, char **); |
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147 | static int InitFTP (CT); |
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148 | static int openFTP (CT, char **); |
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149 | static int InitMail (CT); |
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150 | static int openMail (CT, char **); |
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151 | static int readDigest (CT, char *); |
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152 | |
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153 | /* |
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154 | * Structures for mapping (content) types to |
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155 | * the functions to handle them. |
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156 | */ |
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157 | struct str2init { |
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158 | char *si_key; |
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159 | int si_val; |
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160 | InitFunc si_init; |
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161 | }; |
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162 | |
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163 | static struct str2init str2cts[] = { |
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164 | { "application", CT_APPLICATION, InitApplication }, |
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165 | { "audio", CT_AUDIO, InitGeneric }, |
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166 | { "image", CT_IMAGE, InitGeneric }, |
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167 | { "message", CT_MESSAGE, InitMessage }, |
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168 | { "multipart", CT_MULTIPART, InitMultiPart }, |
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169 | { "text", CT_TEXT, InitText }, |
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170 | { "video", CT_VIDEO, InitGeneric }, |
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171 | { NULL, CT_EXTENSION, NULL }, /* these two must be last! */ |
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172 | { NULL, CT_UNKNOWN, NULL }, |
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173 | }; |
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174 | |
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175 | static struct str2init str2ces[] = { |
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176 | { "base64", CE_BASE64, InitBase64 }, |
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177 | { "quoted-printable", CE_QUOTED, InitQuoted }, |
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178 | { "8bit", CE_8BIT, Init7Bit }, |
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179 | { "7bit", CE_7BIT, Init7Bit }, |
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180 | { "binary", CE_BINARY, NULL }, |
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181 | { NULL, CE_EXTENSION, NULL }, /* these two must be last! */ |
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182 | { NULL, CE_UNKNOWN, NULL }, |
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183 | }; |
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184 | |
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185 | /* |
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186 | * NOTE WELL: si_key MUST NOT have value of NOTOK |
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187 | * |
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188 | * si_key is 1 if access method is anonymous. |
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189 | */ |
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190 | static struct str2init str2methods[] = { |
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191 | { "afs", 1, InitFile }, |
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192 | { "anon-ftp", 1, InitFTP }, |
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193 | { "ftp", 0, InitFTP }, |
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194 | { "local-file", 0, InitFile }, |
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195 | { "mail-server", 0, InitMail }, |
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196 | { NULL, 0, NULL } |
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197 | }; |
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198 | |
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199 | |
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200 | int |
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201 | pidcheck (int status) |
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202 | { |
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203 | if ((status & 0xff00) == 0xff00 || (status & 0x007f) != SIGQUIT) |
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204 | return status; |
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205 | |
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206 | fflush (stdout); |
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207 | fflush (stderr); |
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208 | done (1); |
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209 | /* NOTREACHED */ |
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210 | } |
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211 | |
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212 | |
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213 | /* |
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214 | * Main entry point for parsing a MIME message or file. |
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215 | * It returns the Content structure for the top level |
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216 | * entity in the file. |
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217 | */ |
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218 | |
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219 | CT |
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220 | parse_mime (char *file) |
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221 | { |
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222 | int is_stdin; |
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223 | char buffer[BUFSIZ]; |
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224 | FILE *fp; |
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225 | CT ct; |
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226 | |
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227 | /* |
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228 | * Check if file is actually standard input |
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229 | */ |
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230 | if ((is_stdin = !(strcmp (file, "-")))) { |
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231 | file = add (m_tmpfil (invo_name), NULL); |
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232 | if ((fp = fopen (file, "w+")) == NULL) { |
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233 | advise (file, "unable to fopen for writing and reading"); |
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234 | return NULL; |
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235 | } |
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236 | chmod (file, 0600); |
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237 | while (fgets (buffer, sizeof(buffer), stdin)) |
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238 | fputs (buffer, fp); |
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239 | fflush (fp); |
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240 | |
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241 | if (ferror (stdin)) { |
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242 | unlink (file); |
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243 | advise ("stdin", "error reading"); |
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244 | return NULL; |
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245 | } |
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246 | if (ferror (fp)) { |
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247 | unlink (file); |
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248 | advise (file, "error writing"); |
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249 | return NULL; |
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250 | } |
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251 | fseek (fp, 0L, SEEK_SET); |
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252 | } else if ((fp = fopen (file, "r")) == NULL) { |
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253 | advise (file, "unable to read"); |
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254 | return NULL; |
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255 | } |
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256 | |
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257 | if (!(ct = get_content (fp, file, 1))) { |
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258 | if (is_stdin) |
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259 | unlink (file); |
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260 | fclose (fp); |
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261 | advise (NULL, "unable to decode %s", file); |
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262 | return NULL; |
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263 | } |
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264 | |
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265 | if (is_stdin) |
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266 | ct->c_unlink = 1; /* temp file to remove */ |
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267 | |
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268 | ct->c_fp = NULL; |
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269 | |
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270 | if (ct->c_end == 0L) { |
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271 | fseek (fp, 0L, SEEK_END); |
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272 | ct->c_end = ftell (fp); |
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273 | } |
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274 | |
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275 | if (ct->c_ctinitfnx && (*ct->c_ctinitfnx) (ct) == NOTOK) { |
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276 | fclose (fp); |
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277 | free_content (ct); |
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278 | return NULL; |
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279 | } |
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280 | |
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281 | fclose (fp); |
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282 | return ct; |
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283 | } |
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284 | |
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285 | |
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286 | /* |
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287 | * Main routine for reading/parsing the headers |
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288 | * of a message content. |
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289 | * |
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290 | * toplevel = 1 # we are at the top level of the message |
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291 | * toplevel = 0 # we are inside message type or multipart type |
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292 | * # other than multipart/digest |
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293 | * toplevel = -1 # we are inside multipart/digest |
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294 | */ |
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295 | |
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296 | static CT |
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297 | get_content (FILE *in, char *file, int toplevel) |
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298 | { |
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299 | int compnum, state; |
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300 | char buf[BUFSIZ], name[NAMESZ]; |
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301 | char *np, *vp; |
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302 | CT ct; |
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303 | HF hp; |
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304 | |
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305 | /* allocate the content structure */ |
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306 | if (!(ct = (CT) calloc (1, sizeof(*ct)))) |
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307 | adios (NULL, "out of memory"); |
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308 | |
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309 | ct->c_fp = in; |
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310 | ct->c_file = add (file, NULL); |
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311 | ct->c_begin = ftell (ct->c_fp) + 1; |
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312 | |
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313 | /* |
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314 | * Parse the header fields for this |
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315 | * content into a linked list. |
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316 | */ |
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317 | for (compnum = 1, state = FLD;;) { |
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318 | switch (state = m_getfld (state, name, buf, sizeof(buf), in)) { |
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319 | case FLD: |
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320 | case FLDPLUS: |
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321 | case FLDEOF: |
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322 | compnum++; |
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323 | |
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324 | /* get copies of the buffers */ |
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325 | np = add (name, NULL); |
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326 | vp = add (buf, NULL); |
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327 | |
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328 | /* if necessary, get rest of field */ |
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329 | while (state == FLDPLUS) { |
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330 | state = m_getfld (state, name, buf, sizeof(buf), in); |
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331 | vp = add (buf, vp); /* add to previous value */ |
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332 | } |
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333 | |
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334 | /* Now add the header data to the list */ |
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335 | add_header (ct, np, vp); |
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336 | |
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337 | /* continue, if this isn't the last header field */ |
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338 | if (state != FLDEOF) { |
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339 | ct->c_begin = ftell (in) + 1; |
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340 | continue; |
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341 | } |
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342 | /* else fall... */ |
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343 | |
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344 | case BODY: |
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345 | case BODYEOF: |
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346 | ct->c_begin = ftell (in) - strlen (buf); |
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347 | break; |
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348 | |
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349 | case FILEEOF: |
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350 | ct->c_begin = ftell (in); |
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351 | break; |
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352 | |
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353 | case LENERR: |
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354 | case FMTERR: |
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355 | adios (NULL, "message format error in component #%d", compnum); |
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356 | |
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357 | default: |
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358 | adios (NULL, "getfld() returned %d", state); |
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359 | } |
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360 | |
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361 | /* break out of the loop */ |
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362 | break; |
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363 | } |
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364 | |
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365 | /* |
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366 | * Read the content headers. We will parse the |
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367 | * MIME related header fields into their various |
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368 | * structures and set internal flags related to |
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369 | * content type/subtype, etc. |
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370 | */ |
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371 | |
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372 | hp = ct->c_first_hf; /* start at first header field */ |
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373 | while (hp) { |
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374 | /* Get MIME-Version field */ |
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375 | if (!strcasecmp (hp->name, VRSN_FIELD)) { |
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376 | int ucmp; |
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377 | char c, *cp, *dp; |
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378 | |
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379 | if (ct->c_vrsn) { |
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380 | advise (NULL, "message %s has multiple %s: fields", |
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381 | ct->c_file, VRSN_FIELD); |
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382 | goto next_header; |
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383 | } |
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384 | ct->c_vrsn = add (hp->value, NULL); |
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385 | |
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386 | /* Now, cleanup this field */ |
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387 | cp = ct->c_vrsn; |
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388 | |
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389 | while (isspace (*cp)) |
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390 | cp++; |
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391 | for (dp = strchr(cp, '\n'); dp; dp = strchr(dp, '\n')) |
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392 | *dp++ = ' '; |
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393 | for (dp = cp + strlen (cp) - 1; dp >= cp; dp--) |
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394 | if (!isspace (*dp)) |
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395 | break; |
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396 | *++dp = '\0'; |
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397 | if (debugsw) |
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398 | fprintf (stderr, "%s: %s\n", VRSN_FIELD, cp); |
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399 | |
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400 | if (*cp == '(' && get_comment (ct, &cp, 0) == NOTOK) |
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401 | goto out; |
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402 | |
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403 | for (dp = cp; istoken (*dp); dp++) |
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404 | continue; |
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405 | c = *dp; |
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406 | *dp = '\0'; |
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407 | ucmp = !strcasecmp (cp, VRSN_VALUE); |
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408 | *dp = c; |
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409 | if (!ucmp) { |
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410 | admonish (NULL, "message %s has unknown value for %s: field (%s)", |
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411 | ct->c_file, VRSN_FIELD, cp); |
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412 | } |
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413 | } |
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414 | else if (!strcasecmp (hp->name, TYPE_FIELD)) { |
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415 | /* Get Content-Type field */ |
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416 | struct str2init *s2i; |
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417 | CI ci = &ct->c_ctinfo; |
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418 | |
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419 | /* Check if we've already seen a Content-Type header */ |
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420 | if (ct->c_ctline) { |
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421 | advise (NULL, "message %s has multiple %s: fields", |
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422 | ct->c_file, TYPE_FIELD); |
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423 | goto next_header; |
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424 | } |
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425 | |
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426 | /* Parse the Content-Type field */ |
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427 | if (get_ctinfo (hp->value, ct) == NOTOK) |
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428 | goto out; |
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429 | |
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430 | /* |
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431 | * Set the Init function and the internal |
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432 | * flag for this content type. |
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433 | */ |
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434 | for (s2i = str2cts; s2i->si_key; s2i++) |
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435 | if (!strcasecmp (ci->ci_type, s2i->si_key)) |
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436 | break; |
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437 | if (!s2i->si_key && !uprf (ci->ci_type, "X-")) |
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438 | s2i++; |
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439 | ct->c_type = s2i->si_val; |
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440 | ct->c_ctinitfnx = s2i->si_init; |
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441 | } |
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442 | else if (!strcasecmp (hp->name, ENCODING_FIELD)) { |
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443 | /* Get Content-Transfer-Encoding field */ |
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444 | char c, *cp, *dp; |
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445 | struct str2init *s2i; |
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446 | |
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447 | /* |
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448 | * Check if we've already seen the |
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449 | * Content-Transfer-Encoding field |
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450 | */ |
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451 | if (ct->c_celine) { |
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452 | advise (NULL, "message %s has multiple %s: fields", |
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453 | ct->c_file, ENCODING_FIELD); |
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454 | goto next_header; |
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455 | } |
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456 | |
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457 | /* get copy of this field */ |
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458 | ct->c_celine = cp = add (hp->value, NULL); |
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459 | |
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460 | while (isspace (*cp)) |
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461 | cp++; |
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462 | for (dp = cp; istoken (*dp); dp++) |
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463 | continue; |
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464 | c = *dp; |
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465 | *dp = '\0'; |
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466 | |
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467 | /* |
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468 | * Find the internal flag and Init function |
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469 | * for this transfer encoding. |
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470 | */ |
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471 | for (s2i = str2ces; s2i->si_key; s2i++) |
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472 | if (!strcasecmp (cp, s2i->si_key)) |
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473 | break; |
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474 | if (!s2i->si_key && !uprf (cp, "X-")) |
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475 | s2i++; |
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476 | *dp = c; |
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477 | ct->c_encoding = s2i->si_val; |
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478 | |
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479 | /* Call the Init function for this encoding */ |
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480 | if (s2i->si_init && (*s2i->si_init) (ct) == NOTOK) |
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481 | goto out; |
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482 | } |
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483 | else if (!strcasecmp (hp->name, MD5_FIELD)) { |
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484 | /* Get Content-MD5 field */ |
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485 | char *cp, *dp, *ep; |
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486 | |
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487 | if (!checksw) |
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488 | goto next_header; |
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489 | |
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490 | if (ct->c_digested) { |
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491 | advise (NULL, "message %s has multiple %s: fields", |
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492 | ct->c_file, MD5_FIELD); |
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493 | goto next_header; |
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494 | } |
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495 | |
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496 | ep = cp = add (hp->value, NULL); /* get a copy */ |
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497 | |
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498 | while (isspace (*cp)) |
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499 | cp++; |
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500 | for (dp = strchr(cp, '\n'); dp; dp = strchr(dp, '\n')) |
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501 | *dp++ = ' '; |
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502 | for (dp = cp + strlen (cp) - 1; dp >= cp; dp--) |
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503 | if (!isspace (*dp)) |
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504 | break; |
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505 | *++dp = '\0'; |
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506 | if (debugsw) |
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507 | fprintf (stderr, "%s: %s\n", MD5_FIELD, cp); |
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508 | |
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509 | if (*cp == '(' && get_comment (ct, &cp, 0) == NOTOK) { |
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510 | free (ep); |
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511 | goto out; |
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512 | } |
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513 | |
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514 | for (dp = cp; *dp && !isspace (*dp); dp++) |
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515 | continue; |
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516 | *dp = '\0'; |
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517 | |
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518 | readDigest (ct, cp); |
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519 | free (ep); |
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520 | ct->c_digested++; |
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521 | } |
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522 | else if (!strcasecmp (hp->name, ID_FIELD)) { |
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523 | /* Get Content-ID field */ |
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524 | ct->c_id = add (hp->value, ct->c_id); |
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525 | } |
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526 | else if (!strcasecmp (hp->name, DESCR_FIELD)) { |
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527 | /* Get Content-Description field */ |
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528 | ct->c_descr = add (hp->value, ct->c_descr); |
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529 | } |
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530 | |
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531 | next_header: |
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532 | hp = hp->next; /* next header field */ |
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533 | } |
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534 | |
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535 | /* |
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536 | * Check if we saw a Content-Type field. |
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537 | * If not, then assign a default value for |
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538 | * it, and the Init function. |
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539 | */ |
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540 | if (!ct->c_ctline) { |
---|
541 | /* |
---|
542 | * If we are inside a multipart/digest message, |
---|
543 | * so default type is message/rfc822 |
---|
544 | */ |
---|
545 | if (toplevel < 0) { |
---|
546 | if (get_ctinfo ("message/rfc822", ct) == NOTOK) |
---|
547 | goto out; |
---|
548 | ct->c_type = CT_MESSAGE; |
---|
549 | ct->c_ctinitfnx = InitMessage; |
---|
550 | } else { |
---|
551 | /* |
---|
552 | * Else default type is text/plain |
---|
553 | */ |
---|
554 | if (get_ctinfo ("text/plain", ct) == NOTOK) |
---|
555 | goto out; |
---|
556 | ct->c_type = CT_TEXT; |
---|
557 | ct->c_ctinitfnx = InitText; |
---|
558 | } |
---|
559 | } |
---|
560 | |
---|
561 | /* Use default Transfer-Encoding, if necessary */ |
---|
562 | if (!ct->c_celine) { |
---|
563 | ct->c_encoding = CE_7BIT; |
---|
564 | Init7Bit (ct); |
---|
565 | } |
---|
566 | |
---|
567 | return ct; |
---|
568 | |
---|
569 | out: |
---|
570 | free_content (ct); |
---|
571 | return NULL; |
---|
572 | } |
---|
573 | |
---|
574 | |
---|
575 | /* |
---|
576 | * small routine to add header field to list |
---|
577 | */ |
---|
578 | |
---|
579 | static int |
---|
580 | add_header (CT ct, char *name, char *value) |
---|
581 | { |
---|
582 | HF hp; |
---|
583 | |
---|
584 | /* allocate header field structure */ |
---|
585 | if (!(hp = malloc (sizeof(*hp)))) |
---|
586 | adios (NULL, "out of memory"); |
---|
587 | |
---|
588 | /* link data into header structure */ |
---|
589 | hp->name = name; |
---|
590 | hp->value = value; |
---|
591 | hp->next = NULL; |
---|
592 | |
---|
593 | /* link header structure into the list */ |
---|
594 | if (ct->c_first_hf == NULL) { |
---|
595 | ct->c_first_hf = hp; /* this is the first */ |
---|
596 | ct->c_last_hf = hp; |
---|
597 | } else { |
---|
598 | ct->c_last_hf->next = hp; /* add it to the end */ |
---|
599 | ct->c_last_hf = hp; |
---|
600 | } |
---|
601 | |
---|
602 | return 0; |
---|
603 | } |
---|
604 | |
---|
605 | |
---|
606 | /* |
---|
607 | * Parse Content-Type line and fill in the |
---|
608 | * information of the CTinfo structure. |
---|
609 | */ |
---|
610 | |
---|
611 | static int |
---|
612 | get_ctinfo (char *cp, CT ct) |
---|
613 | { |
---|
614 | int i; |
---|
615 | char *dp, **ap, **ep; |
---|
616 | char c; |
---|
617 | CI ci; |
---|
618 | |
---|
619 | ci = &ct->c_ctinfo; |
---|
620 | i = strlen (invo_name) + 2; |
---|
621 | |
---|
622 | /* store copy of Content-Type line */ |
---|
623 | cp = ct->c_ctline = add (cp, NULL); |
---|
624 | |
---|
625 | while (isspace (*cp)) /* trim leading spaces */ |
---|
626 | cp++; |
---|
627 | |
---|
628 | /* change newlines to spaces */ |
---|
629 | for (dp = strchr(cp, '\n'); dp; dp = strchr(dp, '\n')) |
---|
630 | *dp++ = ' '; |
---|
631 | |
---|
632 | /* trim trailing spaces */ |
---|
633 | for (dp = cp + strlen (cp) - 1; dp >= cp; dp--) |
---|
634 | if (!isspace (*dp)) |
---|
635 | break; |
---|
636 | *++dp = '\0'; |
---|
637 | |
---|
638 | if (debugsw) |
---|
639 | fprintf (stderr, "%s: %s\n", TYPE_FIELD, cp); |
---|
640 | |
---|
641 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
642 | return NOTOK; |
---|
643 | |
---|
644 | for (dp = cp; istoken (*dp); dp++) |
---|
645 | continue; |
---|
646 | c = *dp, *dp = '\0'; |
---|
647 | ci->ci_type = add (cp, NULL); /* store content type */ |
---|
648 | *dp = c, cp = dp; |
---|
649 | |
---|
650 | if (!*ci->ci_type) { |
---|
651 | advise (NULL, "invalid %s: field in message %s (empty type)", |
---|
652 | TYPE_FIELD, ct->c_file); |
---|
653 | return NOTOK; |
---|
654 | } |
---|
655 | |
---|
656 | /* down case the content type string */ |
---|
657 | for (dp = ci->ci_type; *dp; dp++) |
---|
658 | if (isalpha(*dp) && isupper (*dp)) |
---|
659 | *dp = tolower (*dp); |
---|
660 | |
---|
661 | while (isspace (*cp)) |
---|
662 | cp++; |
---|
663 | |
---|
664 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
665 | return NOTOK; |
---|
666 | |
---|
667 | if (*cp != '/') { |
---|
668 | ci->ci_subtype = add ("", NULL); |
---|
669 | goto magic_skip; |
---|
670 | } |
---|
671 | |
---|
672 | cp++; |
---|
673 | while (isspace (*cp)) |
---|
674 | cp++; |
---|
675 | |
---|
676 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
677 | return NOTOK; |
---|
678 | |
---|
679 | for (dp = cp; istoken (*dp); dp++) |
---|
680 | continue; |
---|
681 | c = *dp, *dp = '\0'; |
---|
682 | ci->ci_subtype = add (cp, NULL); /* store the content subtype */ |
---|
683 | *dp = c, cp = dp; |
---|
684 | |
---|
685 | if (!*ci->ci_subtype) { |
---|
686 | advise (NULL, |
---|
687 | "invalid %s: field in message %s (empty subtype for \"%s\")", |
---|
688 | TYPE_FIELD, ct->c_file, ci->ci_type); |
---|
689 | return NOTOK; |
---|
690 | } |
---|
691 | |
---|
692 | /* down case the content subtype string */ |
---|
693 | for (dp = ci->ci_subtype; *dp; dp++) |
---|
694 | if (isalpha(*dp) && isupper (*dp)) |
---|
695 | *dp = tolower (*dp); |
---|
696 | |
---|
697 | magic_skip: |
---|
698 | while (isspace (*cp)) |
---|
699 | cp++; |
---|
700 | |
---|
701 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
702 | return NOTOK; |
---|
703 | |
---|
704 | /* |
---|
705 | * Parse attribute/value pairs given with Content-Type |
---|
706 | */ |
---|
707 | ep = (ap = ci->ci_attrs) + NPARMS; |
---|
708 | while (*cp == ';') { |
---|
709 | char *vp, *up; |
---|
710 | |
---|
711 | if (ap >= ep) { |
---|
712 | advise (NULL, |
---|
713 | "too many parameters in message %s's %s: field (%d max)", |
---|
714 | ct->c_file, TYPE_FIELD, NPARMS); |
---|
715 | return NOTOK; |
---|
716 | } |
---|
717 | |
---|
718 | cp++; |
---|
719 | while (isspace (*cp)) |
---|
720 | cp++; |
---|
721 | |
---|
722 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
723 | return NOTOK; |
---|
724 | |
---|
725 | if (*cp == 0) { |
---|
726 | advise (NULL, |
---|
727 | "extraneous trailing ';' in message %s's %s: parameter list", |
---|
728 | ct->c_file, TYPE_FIELD); |
---|
729 | return OK; |
---|
730 | } |
---|
731 | |
---|
732 | /* down case the attribute name */ |
---|
733 | for (dp = cp; istoken (*dp); dp++) |
---|
734 | if (isalpha(*dp) && isupper (*dp)) |
---|
735 | *dp = tolower (*dp); |
---|
736 | |
---|
737 | for (up = dp; isspace (*dp);) |
---|
738 | dp++; |
---|
739 | if (dp == cp || *dp != '=') { |
---|
740 | advise (NULL, |
---|
741 | "invalid parameter in message %s's %s: field\n%*.*sparameter %s (error detected at offset %d)", |
---|
742 | ct->c_file, TYPE_FIELD, i, i, "", cp, dp - cp); |
---|
743 | return NOTOK; |
---|
744 | } |
---|
745 | |
---|
746 | vp = (*ap = add (cp, NULL)) + (up - cp); |
---|
747 | *vp = '\0'; |
---|
748 | for (dp++; isspace (*dp);) |
---|
749 | dp++; |
---|
750 | |
---|
751 | /* now add the attribute value */ |
---|
752 | ci->ci_values[ap - ci->ci_attrs] = vp = *ap + (dp - cp); |
---|
753 | |
---|
754 | if (*dp == '"') { |
---|
755 | for (cp = ++dp, dp = vp;;) { |
---|
756 | switch (c = *cp++) { |
---|
757 | case '\0': |
---|
758 | bad_quote: |
---|
759 | advise (NULL, |
---|
760 | "invalid quoted-string in message %s's %s: field\n%*.*s(parameter %s)", |
---|
761 | ct->c_file, TYPE_FIELD, i, i, "", *ap); |
---|
762 | return NOTOK; |
---|
763 | |
---|
764 | case '\\': |
---|
765 | *dp++ = c; |
---|
766 | if ((c = *cp++) == '\0') |
---|
767 | goto bad_quote; |
---|
768 | /* else fall... */ |
---|
769 | |
---|
770 | default: |
---|
771 | *dp++ = c; |
---|
772 | continue; |
---|
773 | |
---|
774 | case '"': |
---|
775 | *dp = '\0'; |
---|
776 | break; |
---|
777 | } |
---|
778 | break; |
---|
779 | } |
---|
780 | } else { |
---|
781 | for (cp = dp, dp = vp; istoken (*cp); cp++, dp++) |
---|
782 | continue; |
---|
783 | *dp = '\0'; |
---|
784 | } |
---|
785 | if (!*vp) { |
---|
786 | advise (NULL, |
---|
787 | "invalid parameter in message %s's %s: field\n%*.*s(parameter %s)", |
---|
788 | ct->c_file, TYPE_FIELD, i, i, "", *ap); |
---|
789 | return NOTOK; |
---|
790 | } |
---|
791 | ap++; |
---|
792 | |
---|
793 | while (isspace (*cp)) |
---|
794 | cp++; |
---|
795 | |
---|
796 | if (*cp == '(' && get_comment (ct, &cp, 1) == NOTOK) |
---|
797 | return NOTOK; |
---|
798 | } |
---|
799 | |
---|
800 | /* |
---|
801 | * Check if anything is left over |
---|
802 | */ |
---|
803 | if (*cp) { |
---|
804 | advise (NULL, "extraneous information in message %s's %s: field\n%*.*s(%s)", |
---|
805 | ct->c_file, TYPE_FIELD, i, i, "", cp); |
---|
806 | } |
---|
807 | |
---|
808 | return OK; |
---|
809 | } |
---|
810 | |
---|
811 | |
---|
812 | static int |
---|
813 | get_comment (CT ct, char **ap, int istype) |
---|
814 | { |
---|
815 | int i; |
---|
816 | char *bp, *cp; |
---|
817 | char c, buffer[BUFSIZ], *dp; |
---|
818 | CI ci; |
---|
819 | |
---|
820 | ci = &ct->c_ctinfo; |
---|
821 | cp = *ap; |
---|
822 | bp = buffer; |
---|
823 | cp++; |
---|
824 | |
---|
825 | for (i = 0;;) { |
---|
826 | switch (c = *cp++) { |
---|
827 | case '\0': |
---|
828 | invalid: |
---|
829 | advise (NULL, "invalid comment in message %s's %s: field", |
---|
830 | ct->c_file, istype ? TYPE_FIELD : VRSN_FIELD); |
---|
831 | return NOTOK; |
---|
832 | |
---|
833 | case '\\': |
---|
834 | *bp++ = c; |
---|
835 | if ((c = *cp++) == '\0') |
---|
836 | goto invalid; |
---|
837 | *bp++ = c; |
---|
838 | continue; |
---|
839 | |
---|
840 | case '(': |
---|
841 | i++; |
---|
842 | /* and fall... */ |
---|
843 | default: |
---|
844 | *bp++ = c; |
---|
845 | continue; |
---|
846 | |
---|
847 | case ')': |
---|
848 | if (--i < 0) |
---|
849 | break; |
---|
850 | *bp++ = c; |
---|
851 | continue; |
---|
852 | } |
---|
853 | break; |
---|
854 | } |
---|
855 | *bp = '\0'; |
---|
856 | |
---|
857 | if (istype) { |
---|
858 | if ((dp = ci->ci_comment)) { |
---|
859 | ci->ci_comment = concat (dp, " ", buffer, NULL); |
---|
860 | free (dp); |
---|
861 | } else { |
---|
862 | ci->ci_comment = add (buffer, NULL); |
---|
863 | } |
---|
864 | } |
---|
865 | |
---|
866 | while (isspace (*cp)) |
---|
867 | cp++; |
---|
868 | |
---|
869 | *ap = cp; |
---|
870 | return OK; |
---|
871 | } |
---|
872 | |
---|
873 | |
---|
874 | /* |
---|
875 | * CONTENTS |
---|
876 | * |
---|
877 | * Handles content types audio, image, and video. |
---|
878 | * There's not much to do right here. |
---|
879 | */ |
---|
880 | |
---|
881 | static int |
---|
882 | InitGeneric (CT ct) |
---|
883 | { |
---|
884 | return OK; /* not much to do here */ |
---|
885 | } |
---|
886 | |
---|
887 | |
---|
888 | /* |
---|
889 | * TEXT |
---|
890 | */ |
---|
891 | |
---|
892 | static int |
---|
893 | InitText (CT ct) |
---|
894 | { |
---|
895 | char buffer[BUFSIZ]; |
---|
896 | char *chset; |
---|
897 | char **ap, **ep, *cp; |
---|
898 | struct k2v *kv; |
---|
899 | struct text *t; |
---|
900 | CI ci = &ct->c_ctinfo; |
---|
901 | |
---|
902 | /* check for missing subtype */ |
---|
903 | if (!*ci->ci_subtype) |
---|
904 | ci->ci_subtype = add ("plain", ci->ci_subtype); |
---|
905 | |
---|
906 | /* match subtype */ |
---|
907 | for (kv = SubText; kv->kv_key; kv++) |
---|
908 | if (!strcasecmp (ci->ci_subtype, kv->kv_key)) |
---|
909 | break; |
---|
910 | ct->c_subtype = kv->kv_value; |
---|
911 | |
---|
912 | /* allocate text structure */ |
---|
913 | if ((t = (struct text *) calloc (1, sizeof(*t))) == NULL) |
---|
914 | adios (NULL, "out of memory"); |
---|
915 | ct->c_ctparams = (void *) t; |
---|
916 | |
---|
917 | /* scan for charset parameter */ |
---|
918 | for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) |
---|
919 | if (!strcasecmp (*ap, "charset")) |
---|
920 | break; |
---|
921 | |
---|
922 | if (*ap) |
---|
923 | chset = *ep; |
---|
924 | else |
---|
925 | chset = "US-ASCII"; /* default for text */ |
---|
926 | |
---|
927 | /* match character set, or set to unknown */ |
---|
928 | for (kv = Charset; kv->kv_key; kv++) |
---|
929 | if (!strcasecmp (chset, kv->kv_key)) |
---|
930 | break; |
---|
931 | t->tx_charset = kv->kv_value; |
---|
932 | |
---|
933 | /* |
---|
934 | * If we can not handle character set natively, |
---|
935 | * then check profile for string to modify the |
---|
936 | * terminal or display method. |
---|
937 | */ |
---|
938 | if (!check_charset (chset, strlen (chset))) { |
---|
939 | snprintf (buffer, sizeof(buffer), "%s-charset-%s", invo_name, chset); |
---|
940 | if ((cp = context_find (buffer))) |
---|
941 | ct->c_termproc = getcpy (cp); |
---|
942 | } |
---|
943 | |
---|
944 | return OK; |
---|
945 | } |
---|
946 | |
---|
947 | |
---|
948 | /* |
---|
949 | * MULTIPART |
---|
950 | */ |
---|
951 | |
---|
952 | static int |
---|
953 | InitMultiPart (CT ct) |
---|
954 | { |
---|
955 | int inout; |
---|
956 | long last, pos; |
---|
957 | char *cp, *dp, **ap, **ep; |
---|
958 | char *bp, buffer[BUFSIZ]; |
---|
959 | struct multipart *m; |
---|
960 | struct k2v *kv; |
---|
961 | struct part *part, **next; |
---|
962 | CI ci = &ct->c_ctinfo; |
---|
963 | CT p; |
---|
964 | FILE *fp; |
---|
965 | |
---|
966 | /* |
---|
967 | * The encoding for multipart messages must be either |
---|
968 | * 7bit, 8bit, or binary (per RFC2045). |
---|
969 | */ |
---|
970 | if (ct->c_encoding != CE_7BIT && ct->c_encoding != CE_8BIT |
---|
971 | && ct->c_encoding != CE_BINARY) { |
---|
972 | admonish (NULL, |
---|
973 | "\"%s/%s\" type in message %s must be encoded in 7bit, 8bit, or binary", |
---|
974 | ci->ci_type, ci->ci_subtype, ct->c_file); |
---|
975 | return NOTOK; |
---|
976 | } |
---|
977 | |
---|
978 | /* match subtype */ |
---|
979 | for (kv = SubMultiPart; kv->kv_key; kv++) |
---|
980 | if (!strcasecmp (ci->ci_subtype, kv->kv_key)) |
---|
981 | break; |
---|
982 | ct->c_subtype = kv->kv_value; |
---|
983 | |
---|
984 | /* |
---|
985 | * Check for "boundary" parameter, which is |
---|
986 | * required for multipart messages. |
---|
987 | */ |
---|
988 | for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) { |
---|
989 | if (!strcasecmp (*ap, "boundary")) { |
---|
990 | bp = *ep; |
---|
991 | break; |
---|
992 | } |
---|
993 | } |
---|
994 | |
---|
995 | /* complain if boundary parameter is missing */ |
---|
996 | if (!*ap) { |
---|
997 | advise (NULL, |
---|
998 | "a \"boundary\" parameter is mandatory for \"%s/%s\" type in message %s's %s: field", |
---|
999 | ci->ci_type, ci->ci_subtype, ct->c_file, TYPE_FIELD); |
---|
1000 | return NOTOK; |
---|
1001 | } |
---|
1002 | |
---|
1003 | /* allocate primary structure for multipart info */ |
---|
1004 | if ((m = (struct multipart *) calloc (1, sizeof(*m))) == NULL) |
---|
1005 | adios (NULL, "out of memory"); |
---|
1006 | ct->c_ctparams = (void *) m; |
---|
1007 | |
---|
1008 | /* check if boundary parameter contains only whitespace characters */ |
---|
1009 | for (cp = bp; isspace (*cp); cp++) |
---|
1010 | continue; |
---|
1011 | if (!*cp) { |
---|
1012 | advise (NULL, "invalid \"boundary\" parameter for \"%s/%s\" type in message %s's %s: field", |
---|
1013 | ci->ci_type, ci->ci_subtype, ct->c_file, TYPE_FIELD); |
---|
1014 | return NOTOK; |
---|
1015 | } |
---|
1016 | |
---|
1017 | /* remove trailing whitespace from boundary parameter */ |
---|
1018 | for (cp = bp, dp = cp + strlen (cp) - 1; dp > cp; dp--) |
---|
1019 | if (!isspace (*dp)) |
---|
1020 | break; |
---|
1021 | *++dp = '\0'; |
---|
1022 | |
---|
1023 | /* record boundary separators */ |
---|
1024 | m->mp_start = concat (bp, "\n", NULL); |
---|
1025 | m->mp_stop = concat (bp, "--\n", NULL); |
---|
1026 | |
---|
1027 | if (!ct->c_fp && (ct->c_fp = fopen (ct->c_file, "r")) == NULL) { |
---|
1028 | advise (ct->c_file, "unable to open for reading"); |
---|
1029 | return NOTOK; |
---|
1030 | } |
---|
1031 | |
---|
1032 | fseek (fp = ct->c_fp, pos = ct->c_begin, SEEK_SET); |
---|
1033 | last = ct->c_end; |
---|
1034 | next = &m->mp_parts; |
---|
1035 | part = NULL; |
---|
1036 | inout = 1; |
---|
1037 | |
---|
1038 | while (fgets (buffer, sizeof(buffer) - 1, fp)) { |
---|
1039 | if (pos > last) |
---|
1040 | break; |
---|
1041 | |
---|
1042 | pos += strlen (buffer); |
---|
1043 | if (buffer[0] != '-' || buffer[1] != '-') |
---|
1044 | continue; |
---|
1045 | if (inout) { |
---|
1046 | if (strcmp (buffer + 2, m->mp_start)) |
---|
1047 | continue; |
---|
1048 | next_part: |
---|
1049 | if ((part = (struct part *) calloc (1, sizeof(*part))) == NULL) |
---|
1050 | adios (NULL, "out of memory"); |
---|
1051 | *next = part; |
---|
1052 | next = &part->mp_next; |
---|
1053 | |
---|
1054 | if (!(p = get_content (fp, ct->c_file, |
---|
1055 | ct->c_subtype == MULTI_DIGEST ? -1 : 0))) { |
---|
1056 | fclose (ct->c_fp); |
---|
1057 | ct->c_fp = NULL; |
---|
1058 | return NOTOK; |
---|
1059 | } |
---|
1060 | p->c_fp = NULL; |
---|
1061 | part->mp_part = p; |
---|
1062 | pos = p->c_begin; |
---|
1063 | fseek (fp, pos, SEEK_SET); |
---|
1064 | inout = 0; |
---|
1065 | } else { |
---|
1066 | if (strcmp (buffer + 2, m->mp_start) == 0) { |
---|
1067 | inout = 1; |
---|
1068 | end_part: |
---|
1069 | p = part->mp_part; |
---|
1070 | p->c_end = ftell(fp) - (strlen(buffer) + 1); |
---|
1071 | if (p->c_end < p->c_begin) |
---|
1072 | p->c_begin = p->c_end; |
---|
1073 | if (inout) |
---|
1074 | goto next_part; |
---|
1075 | goto last_part; |
---|
1076 | } else { |
---|
1077 | if (strcmp (buffer + 2, m->mp_stop) == 0) |
---|
1078 | goto end_part; |
---|
1079 | } |
---|
1080 | } |
---|
1081 | } |
---|
1082 | |
---|
1083 | advise (NULL, "bogus multipart content in message %s", ct->c_file); |
---|
1084 | if (!inout && part) { |
---|
1085 | p = part->mp_part; |
---|
1086 | p->c_end = ct->c_end; |
---|
1087 | |
---|
1088 | if (p->c_begin >= p->c_end) { |
---|
1089 | for (next = &m->mp_parts; *next != part; |
---|
1090 | next = &((*next)->mp_next)) |
---|
1091 | continue; |
---|
1092 | *next = NULL; |
---|
1093 | free_content (p); |
---|
1094 | free ((char *) part); |
---|
1095 | } |
---|
1096 | } |
---|
1097 | |
---|
1098 | last_part: |
---|
1099 | /* reverse the order of the parts for multipart/alternative */ |
---|
1100 | if (ct->c_subtype == MULTI_ALTERNATE) |
---|
1101 | reverse_parts (ct); |
---|
1102 | |
---|
1103 | /* |
---|
1104 | * label all subparts with part number, and |
---|
1105 | * then initialize the content of the subpart. |
---|
1106 | */ |
---|
1107 | { |
---|
1108 | int partnum; |
---|
1109 | char *pp; |
---|
1110 | char partnam[BUFSIZ]; |
---|
1111 | |
---|
1112 | if (ct->c_partno) { |
---|
1113 | snprintf (partnam, sizeof(partnum), "%s.", ct->c_partno); |
---|
1114 | pp = partnam + strlen (partnam); |
---|
1115 | } else { |
---|
1116 | pp = partnam; |
---|
1117 | } |
---|
1118 | |
---|
1119 | for (part = m->mp_parts, partnum = 1; part; |
---|
1120 | part = part->mp_next, partnum++) { |
---|
1121 | p = part->mp_part; |
---|
1122 | |
---|
1123 | sprintf (pp, "%d", partnum); |
---|
1124 | p->c_partno = add (partnam, NULL); |
---|
1125 | |
---|
1126 | /* initialize the content of the subparts */ |
---|
1127 | if (p->c_ctinitfnx && (*p->c_ctinitfnx) (p) == NOTOK) { |
---|
1128 | fclose (ct->c_fp); |
---|
1129 | ct->c_fp = NULL; |
---|
1130 | return NOTOK; |
---|
1131 | } |
---|
1132 | } |
---|
1133 | } |
---|
1134 | |
---|
1135 | fclose (ct->c_fp); |
---|
1136 | ct->c_fp = NULL; |
---|
1137 | return OK; |
---|
1138 | } |
---|
1139 | |
---|
1140 | |
---|
1141 | /* |
---|
1142 | * reverse the order of the parts of a multipart |
---|
1143 | */ |
---|
1144 | |
---|
1145 | static void |
---|
1146 | reverse_parts (CT ct) |
---|
1147 | { |
---|
1148 | int i; |
---|
1149 | struct multipart *m; |
---|
1150 | struct part **base, **bmp, **next, *part; |
---|
1151 | |
---|
1152 | m = (struct multipart *) ct->c_ctparams; |
---|
1153 | |
---|
1154 | /* if only one part, just return */ |
---|
1155 | if (!m->mp_parts || !m->mp_parts->mp_next) |
---|
1156 | return; |
---|
1157 | |
---|
1158 | /* count number of parts */ |
---|
1159 | i = 0; |
---|
1160 | for (part = m->mp_parts; part; part = part->mp_next) |
---|
1161 | i++; |
---|
1162 | |
---|
1163 | /* allocate array of pointers to the parts */ |
---|
1164 | if (!(base = (struct part **) calloc ((size_t) (i + 1), sizeof(*base)))) |
---|
1165 | adios (NULL, "out of memory"); |
---|
1166 | bmp = base; |
---|
1167 | |
---|
1168 | /* point at all the parts */ |
---|
1169 | for (part = m->mp_parts; part; part = part->mp_next) |
---|
1170 | *bmp++ = part; |
---|
1171 | *bmp = NULL; |
---|
1172 | |
---|
1173 | /* reverse the order of the parts */ |
---|
1174 | next = &m->mp_parts; |
---|
1175 | for (bmp--; bmp >= base; bmp--) { |
---|
1176 | part = *bmp; |
---|
1177 | *next = part; |
---|
1178 | next = &part->mp_next; |
---|
1179 | } |
---|
1180 | *next = NULL; |
---|
1181 | |
---|
1182 | /* free array of pointers */ |
---|
1183 | free ((char *) base); |
---|
1184 | } |
---|
1185 | |
---|
1186 | |
---|
1187 | /* |
---|
1188 | * MESSAGE |
---|
1189 | */ |
---|
1190 | |
---|
1191 | static int |
---|
1192 | InitMessage (CT ct) |
---|
1193 | { |
---|
1194 | struct k2v *kv; |
---|
1195 | CI ci = &ct->c_ctinfo; |
---|
1196 | |
---|
1197 | if ((ct->c_encoding != CE_7BIT) && (ct->c_encoding != CE_8BIT)) { |
---|
1198 | admonish (NULL, |
---|
1199 | "\"%s/%s\" type in message %s should be encoded in 7bit or 8bit", |
---|
1200 | ci->ci_type, ci->ci_subtype, ct->c_file); |
---|
1201 | return NOTOK; |
---|
1202 | } |
---|
1203 | |
---|
1204 | /* check for missing subtype */ |
---|
1205 | if (!*ci->ci_subtype) |
---|
1206 | ci->ci_subtype = add ("rfc822", ci->ci_subtype); |
---|
1207 | |
---|
1208 | /* match subtype */ |
---|
1209 | for (kv = SubMessage; kv->kv_key; kv++) |
---|
1210 | if (!strcasecmp (ci->ci_subtype, kv->kv_key)) |
---|
1211 | break; |
---|
1212 | ct->c_subtype = kv->kv_value; |
---|
1213 | |
---|
1214 | switch (ct->c_subtype) { |
---|
1215 | case MESSAGE_RFC822: |
---|
1216 | break; |
---|
1217 | |
---|
1218 | case MESSAGE_PARTIAL: |
---|
1219 | { |
---|
1220 | char **ap, **ep; |
---|
1221 | struct partial *p; |
---|
1222 | |
---|
1223 | if ((p = (struct partial *) calloc (1, sizeof(*p))) == NULL) |
---|
1224 | adios (NULL, "out of memory"); |
---|
1225 | ct->c_ctparams = (void *) p; |
---|
1226 | |
---|
1227 | /* scan for parameters "id", "number", and "total" */ |
---|
1228 | for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) { |
---|
1229 | if (!strcasecmp (*ap, "id")) { |
---|
1230 | p->pm_partid = add (*ep, NULL); |
---|
1231 | continue; |
---|
1232 | } |
---|
1233 | if (!strcasecmp (*ap, "number")) { |
---|
1234 | if (sscanf (*ep, "%d", &p->pm_partno) != 1 |
---|
1235 | || p->pm_partno < 1) { |
---|
1236 | invalid_param: |
---|
1237 | advise (NULL, |
---|
1238 | "invalid %s parameter for \"%s/%s\" type in message %s's %s field", |
---|
1239 | *ap, ci->ci_type, ci->ci_subtype, |
---|
1240 | ct->c_file, TYPE_FIELD); |
---|
1241 | return NOTOK; |
---|
1242 | } |
---|
1243 | continue; |
---|
1244 | } |
---|
1245 | if (!strcasecmp (*ap, "total")) { |
---|
1246 | if (sscanf (*ep, "%d", &p->pm_maxno) != 1 |
---|
1247 | || p->pm_maxno < 1) |
---|
1248 | goto invalid_param; |
---|
1249 | continue; |
---|
1250 | } |
---|
1251 | } |
---|
1252 | |
---|
1253 | if (!p->pm_partid |
---|
1254 | || !p->pm_partno |
---|
1255 | || (p->pm_maxno && p->pm_partno > p->pm_maxno)) { |
---|
1256 | advise (NULL, |
---|
1257 | "invalid parameters for \"%s/%s\" type in message %s's %s field", |
---|
1258 | ci->ci_type, ci->ci_subtype, |
---|
1259 | ct->c_file, TYPE_FIELD); |
---|
1260 | return NOTOK; |
---|
1261 | } |
---|
1262 | } |
---|
1263 | break; |
---|
1264 | |
---|
1265 | case MESSAGE_EXTERNAL: |
---|
1266 | { |
---|
1267 | int exresult; |
---|
1268 | struct exbody *e; |
---|
1269 | CT p; |
---|
1270 | FILE *fp; |
---|
1271 | |
---|
1272 | if ((e = (struct exbody *) calloc (1, sizeof(*e))) == NULL) |
---|
1273 | adios (NULL, "out of memory"); |
---|
1274 | ct->c_ctparams = (void *) e; |
---|
1275 | |
---|
1276 | if (!ct->c_fp |
---|
1277 | && (ct->c_fp = fopen (ct->c_file, "r")) == NULL) { |
---|
1278 | advise (ct->c_file, "unable to open for reading"); |
---|
1279 | return NOTOK; |
---|
1280 | } |
---|
1281 | |
---|
1282 | fseek (fp = ct->c_fp, ct->c_begin, SEEK_SET); |
---|
1283 | |
---|
1284 | if (!(p = get_content (fp, ct->c_file, 0))) { |
---|
1285 | fclose (ct->c_fp); |
---|
1286 | ct->c_fp = NULL; |
---|
1287 | return NOTOK; |
---|
1288 | } |
---|
1289 | |
---|
1290 | e->eb_parent = ct; |
---|
1291 | e->eb_content = p; |
---|
1292 | p->c_ctexbody = e; |
---|
1293 | if ((exresult = params_external (ct, 0)) != NOTOK |
---|
1294 | && p->c_ceopenfnx == openMail) { |
---|
1295 | int cc, size; |
---|
1296 | char *bp; |
---|
1297 | |
---|
1298 | if ((size = ct->c_end - p->c_begin) <= 0) { |
---|
1299 | if (!e->eb_subject) |
---|
1300 | content_error (NULL, ct, |
---|
1301 | "empty body for access-type=mail-server"); |
---|
1302 | goto no_body; |
---|
1303 | } |
---|
1304 | |
---|
1305 | if ((e->eb_body = bp = malloc ((unsigned) size)) == NULL) |
---|
1306 | adios (NULL, "out of memory"); |
---|
1307 | fseek (p->c_fp, p->c_begin, SEEK_SET); |
---|
1308 | while (size > 0) |
---|
1309 | switch (cc = fread (bp, sizeof(*bp), size, p->c_fp)) { |
---|
1310 | case NOTOK: |
---|
1311 | adios ("failed", "fread"); |
---|
1312 | |
---|
1313 | case OK: |
---|
1314 | adios (NULL, "unexpected EOF from fread"); |
---|
1315 | |
---|
1316 | default: |
---|
1317 | bp += cc, size -= cc; |
---|
1318 | break; |
---|
1319 | } |
---|
1320 | *bp = 0; |
---|
1321 | } |
---|
1322 | no_body: |
---|
1323 | p->c_fp = NULL; |
---|
1324 | p->c_end = p->c_begin; |
---|
1325 | |
---|
1326 | fclose (ct->c_fp); |
---|
1327 | ct->c_fp = NULL; |
---|
1328 | |
---|
1329 | if (exresult == NOTOK) |
---|
1330 | return NOTOK; |
---|
1331 | if (e->eb_flags == NOTOK) |
---|
1332 | return OK; |
---|
1333 | |
---|
1334 | switch (p->c_type) { |
---|
1335 | case CT_MULTIPART: |
---|
1336 | break; |
---|
1337 | |
---|
1338 | case CT_MESSAGE: |
---|
1339 | if (p->c_subtype != MESSAGE_RFC822) |
---|
1340 | break; |
---|
1341 | /* else fall... */ |
---|
1342 | default: |
---|
1343 | e->eb_partno = ct->c_partno; |
---|
1344 | if (p->c_ctinitfnx) |
---|
1345 | (*p->c_ctinitfnx) (p); |
---|
1346 | break; |
---|
1347 | } |
---|
1348 | } |
---|
1349 | break; |
---|
1350 | |
---|
1351 | default: |
---|
1352 | break; |
---|
1353 | } |
---|
1354 | |
---|
1355 | return OK; |
---|
1356 | } |
---|
1357 | |
---|
1358 | |
---|
1359 | static int |
---|
1360 | params_external (CT ct, int composing) |
---|
1361 | { |
---|
1362 | char **ap, **ep; |
---|
1363 | struct exbody *e = (struct exbody *) ct->c_ctparams; |
---|
1364 | CI ci = &ct->c_ctinfo; |
---|
1365 | |
---|
1366 | for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) { |
---|
1367 | if (!strcasecmp (*ap, "access-type")) { |
---|
1368 | struct str2init *s2i; |
---|
1369 | CT p = e->eb_content; |
---|
1370 | |
---|
1371 | for (s2i = str2methods; s2i->si_key; s2i++) |
---|
1372 | if (!strcasecmp (*ep, s2i->si_key)) |
---|
1373 | break; |
---|
1374 | if (!s2i->si_key) { |
---|
1375 | e->eb_access = *ep; |
---|
1376 | e->eb_flags = NOTOK; |
---|
1377 | p->c_encoding = CE_EXTERNAL; |
---|
1378 | continue; |
---|
1379 | } |
---|
1380 | e->eb_access = s2i->si_key; |
---|
1381 | e->eb_flags = s2i->si_val; |
---|
1382 | p->c_encoding = CE_EXTERNAL; |
---|
1383 | |
---|
1384 | /* Call the Init function for this external type */ |
---|
1385 | if ((*s2i->si_init)(p) == NOTOK) |
---|
1386 | return NOTOK; |
---|
1387 | continue; |
---|
1388 | } |
---|
1389 | if (!strcasecmp (*ap, "name")) { |
---|
1390 | e->eb_name = *ep; |
---|
1391 | continue; |
---|
1392 | } |
---|
1393 | if (!strcasecmp (*ap, "permission")) { |
---|
1394 | e->eb_permission = *ep; |
---|
1395 | continue; |
---|
1396 | } |
---|
1397 | if (!strcasecmp (*ap, "site")) { |
---|
1398 | e->eb_site = *ep; |
---|
1399 | continue; |
---|
1400 | } |
---|
1401 | if (!strcasecmp (*ap, "directory")) { |
---|
1402 | e->eb_dir = *ep; |
---|
1403 | continue; |
---|
1404 | } |
---|
1405 | if (!strcasecmp (*ap, "mode")) { |
---|
1406 | e->eb_mode = *ep; |
---|
1407 | continue; |
---|
1408 | } |
---|
1409 | if (!strcasecmp (*ap, "size")) { |
---|
1410 | sscanf (*ep, "%lu", &e->eb_size); |
---|
1411 | continue; |
---|
1412 | } |
---|
1413 | if (!strcasecmp (*ap, "server")) { |
---|
1414 | e->eb_server = *ep; |
---|
1415 | continue; |
---|
1416 | } |
---|
1417 | if (!strcasecmp (*ap, "subject")) { |
---|
1418 | e->eb_subject = *ep; |
---|
1419 | continue; |
---|
1420 | } |
---|
1421 | if (composing && !strcasecmp (*ap, "body")) { |
---|
1422 | e->eb_body = getcpy (*ep); |
---|
1423 | continue; |
---|
1424 | } |
---|
1425 | } |
---|
1426 | |
---|
1427 | if (!e->eb_access) { |
---|
1428 | advise (NULL, |
---|
1429 | "invalid parameters for \"%s/%s\" type in message %s's %s field", |
---|
1430 | ci->ci_type, ci->ci_subtype, ct->c_file, TYPE_FIELD); |
---|
1431 | return NOTOK; |
---|
1432 | } |
---|
1433 | |
---|
1434 | return OK; |
---|
1435 | } |
---|
1436 | |
---|
1437 | |
---|
1438 | /* |
---|
1439 | * APPLICATION |
---|
1440 | */ |
---|
1441 | |
---|
1442 | static int |
---|
1443 | InitApplication (CT ct) |
---|
1444 | { |
---|
1445 | struct k2v *kv; |
---|
1446 | CI ci = &ct->c_ctinfo; |
---|
1447 | |
---|
1448 | /* match subtype */ |
---|
1449 | for (kv = SubApplication; kv->kv_key; kv++) |
---|
1450 | if (!strcasecmp (ci->ci_subtype, kv->kv_key)) |
---|
1451 | break; |
---|
1452 | ct->c_subtype = kv->kv_value; |
---|
1453 | |
---|
1454 | return OK; |
---|
1455 | } |
---|
1456 | |
---|
1457 | |
---|
1458 | /* |
---|
1459 | * TRANSFER ENCODINGS |
---|
1460 | */ |
---|
1461 | |
---|
1462 | static int |
---|
1463 | init_encoding (CT ct, OpenCEFunc openfnx) |
---|
1464 | { |
---|
1465 | CE ce; |
---|
1466 | |
---|
1467 | if ((ce = (CE) calloc (1, sizeof(*ce))) == NULL) |
---|
1468 | adios (NULL, "out of memory"); |
---|
1469 | |
---|
1470 | ct->c_cefile = ce; |
---|
1471 | ct->c_ceopenfnx = openfnx; |
---|
1472 | ct->c_ceclosefnx = close_encoding; |
---|
1473 | ct->c_cesizefnx = size_encoding; |
---|
1474 | |
---|
1475 | return OK; |
---|
1476 | } |
---|
1477 | |
---|
1478 | |
---|
1479 | static void |
---|
1480 | close_encoding (CT ct) |
---|
1481 | { |
---|
1482 | CE ce; |
---|
1483 | |
---|
1484 | if (!(ce = ct->c_cefile)) |
---|
1485 | return; |
---|
1486 | |
---|
1487 | if (ce->ce_fp) { |
---|
1488 | fclose (ce->ce_fp); |
---|
1489 | ce->ce_fp = NULL; |
---|
1490 | } |
---|
1491 | } |
---|
1492 | |
---|
1493 | |
---|
1494 | static unsigned long |
---|
1495 | size_encoding (CT ct) |
---|
1496 | { |
---|
1497 | int fd; |
---|
1498 | unsigned long size; |
---|
1499 | char *file; |
---|
1500 | CE ce; |
---|
1501 | struct stat st; |
---|
1502 | |
---|
1503 | if (!(ce = ct->c_cefile)) |
---|
1504 | return (ct->c_end - ct->c_begin); |
---|
1505 | |
---|
1506 | if (ce->ce_fp && fstat (fileno (ce->ce_fp), &st) != NOTOK) |
---|
1507 | return (long) st.st_size; |
---|
1508 | |
---|
1509 | if (ce->ce_file) { |
---|
1510 | if (stat (ce->ce_file, &st) != NOTOK) |
---|
1511 | return (long) st.st_size; |
---|
1512 | else |
---|
1513 | return 0L; |
---|
1514 | } |
---|
1515 | |
---|
1516 | if (ct->c_encoding == CE_EXTERNAL) |
---|
1517 | return (ct->c_end - ct->c_begin); |
---|
1518 | |
---|
1519 | file = NULL; |
---|
1520 | if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK) |
---|
1521 | return (ct->c_end - ct->c_begin); |
---|
1522 | |
---|
1523 | if (fstat (fd, &st) != NOTOK) |
---|
1524 | size = (long) st.st_size; |
---|
1525 | else |
---|
1526 | size = 0L; |
---|
1527 | |
---|
1528 | (*ct->c_ceclosefnx) (ct); |
---|
1529 | return size; |
---|
1530 | } |
---|
1531 | |
---|
1532 | |
---|
1533 | /* |
---|
1534 | * BASE64 |
---|
1535 | */ |
---|
1536 | |
---|
1537 | static unsigned char b642nib[0x80] = { |
---|
1538 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1539 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1540 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1541 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1542 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1543 | 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f, |
---|
1544 | 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
---|
1545 | 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1546 | 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
---|
1547 | 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, |
---|
1548 | 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, |
---|
1549 | 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff, |
---|
1550 | 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, |
---|
1551 | 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, |
---|
1552 | 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, |
---|
1553 | 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff |
---|
1554 | }; |
---|
1555 | |
---|
1556 | |
---|
1557 | static int |
---|
1558 | InitBase64 (CT ct) |
---|
1559 | { |
---|
1560 | return init_encoding (ct, openBase64); |
---|
1561 | } |
---|
1562 | |
---|
1563 | |
---|
1564 | static int |
---|
1565 | openBase64 (CT ct, char **file) |
---|
1566 | { |
---|
1567 | int bitno, cc, digested; |
---|
1568 | int fd, len, skip; |
---|
1569 | unsigned long bits; |
---|
1570 | unsigned char value, *b, *b1, *b2, *b3; |
---|
1571 | char *cp, *ep, buffer[BUFSIZ]; |
---|
1572 | CE ce; |
---|
1573 | MD5_CTX mdContext; |
---|
1574 | |
---|
1575 | b = (unsigned char *) &bits; |
---|
1576 | b1 = &b[endian > 0 ? 1 : 2]; |
---|
1577 | b2 = &b[endian > 0 ? 2 : 1]; |
---|
1578 | b3 = &b[endian > 0 ? 3 : 0]; |
---|
1579 | |
---|
1580 | ce = ct->c_cefile; |
---|
1581 | if (ce->ce_fp) { |
---|
1582 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
1583 | goto ready_to_go; |
---|
1584 | } |
---|
1585 | |
---|
1586 | if (ce->ce_file) { |
---|
1587 | if ((ce->ce_fp = fopen (ce->ce_file, "r")) == NULL) { |
---|
1588 | content_error (ce->ce_file, ct, "unable to fopen for reading"); |
---|
1589 | return NOTOK; |
---|
1590 | } |
---|
1591 | goto ready_to_go; |
---|
1592 | } |
---|
1593 | |
---|
1594 | if (*file == NULL) { |
---|
1595 | ce->ce_file = add (m_scratch ("", tmp), NULL); |
---|
1596 | ce->ce_unlink = 1; |
---|
1597 | } else { |
---|
1598 | ce->ce_file = add (*file, NULL); |
---|
1599 | ce->ce_unlink = 0; |
---|
1600 | } |
---|
1601 | |
---|
1602 | if ((ce->ce_fp = fopen (ce->ce_file, "w+")) == NULL) { |
---|
1603 | content_error (ce->ce_file, ct, "unable to fopen for reading/writing"); |
---|
1604 | return NOTOK; |
---|
1605 | } |
---|
1606 | |
---|
1607 | if ((len = ct->c_end - ct->c_begin) < 0) |
---|
1608 | adios (NULL, "internal error(1)"); |
---|
1609 | |
---|
1610 | if (!ct->c_fp && (ct->c_fp = fopen (ct->c_file, "r")) == NULL) { |
---|
1611 | content_error (ct->c_file, ct, "unable to open for reading"); |
---|
1612 | return NOTOK; |
---|
1613 | } |
---|
1614 | |
---|
1615 | if ((digested = ct->c_digested)) |
---|
1616 | MD5Init (&mdContext); |
---|
1617 | |
---|
1618 | bitno = 18; |
---|
1619 | bits = 0L; |
---|
1620 | skip = 0; |
---|
1621 | |
---|
1622 | lseek (fd = fileno (ct->c_fp), (off_t) ct->c_begin, SEEK_SET); |
---|
1623 | while (len > 0) { |
---|
1624 | switch (cc = read (fd, buffer, sizeof(buffer) - 1)) { |
---|
1625 | case NOTOK: |
---|
1626 | content_error (ct->c_file, ct, "error reading from"); |
---|
1627 | goto clean_up; |
---|
1628 | |
---|
1629 | case OK: |
---|
1630 | content_error (NULL, ct, "premature eof"); |
---|
1631 | goto clean_up; |
---|
1632 | |
---|
1633 | default: |
---|
1634 | if (cc > len) |
---|
1635 | cc = len; |
---|
1636 | len -= cc; |
---|
1637 | |
---|
1638 | for (ep = (cp = buffer) + cc; cp < ep; cp++) { |
---|
1639 | switch (*cp) { |
---|
1640 | default: |
---|
1641 | if (isspace (*cp)) |
---|
1642 | break; |
---|
1643 | if (skip || (*cp & 0x80) |
---|
1644 | || (value = b642nib[*cp & 0x7f]) > 0x3f) { |
---|
1645 | if (debugsw) { |
---|
1646 | fprintf (stderr, "*cp=0x%x pos=%ld skip=%d\n", |
---|
1647 | *cp, |
---|
1648 | (long) (lseek (fd, (off_t) 0, SEEK_CUR) - (ep - cp)), |
---|
1649 | skip); |
---|
1650 | } |
---|
1651 | content_error (NULL, ct, |
---|
1652 | "invalid BASE64 encoding -- continuing"); |
---|
1653 | continue; |
---|
1654 | } |
---|
1655 | |
---|
1656 | bits |= value << bitno; |
---|
1657 | test_end: |
---|
1658 | if ((bitno -= 6) < 0) { |
---|
1659 | putc ((char) *b1, ce->ce_fp); |
---|
1660 | if (digested) |
---|
1661 | MD5Update (&mdContext, b1, 1); |
---|
1662 | if (skip < 2) { |
---|
1663 | putc ((char) *b2, ce->ce_fp); |
---|
1664 | if (digested) |
---|
1665 | MD5Update (&mdContext, b2, 1); |
---|
1666 | if (skip < 1) { |
---|
1667 | putc ((char) *b3, ce->ce_fp); |
---|
1668 | if (digested) |
---|
1669 | MD5Update (&mdContext, b3, 1); |
---|
1670 | } |
---|
1671 | } |
---|
1672 | |
---|
1673 | if (ferror (ce->ce_fp)) { |
---|
1674 | content_error (ce->ce_file, ct, |
---|
1675 | "error writing to"); |
---|
1676 | goto clean_up; |
---|
1677 | } |
---|
1678 | bitno = 18, bits = 0L, skip = 0; |
---|
1679 | } |
---|
1680 | break; |
---|
1681 | |
---|
1682 | case '=': |
---|
1683 | if (++skip > 3) |
---|
1684 | goto self_delimiting; |
---|
1685 | goto test_end; |
---|
1686 | } |
---|
1687 | } |
---|
1688 | } |
---|
1689 | } |
---|
1690 | |
---|
1691 | if (bitno != 18) { |
---|
1692 | if (debugsw) |
---|
1693 | fprintf (stderr, "premature ending (bitno %d)\n", bitno); |
---|
1694 | |
---|
1695 | content_error (NULL, ct, "invalid BASE64 encoding"); |
---|
1696 | goto clean_up; |
---|
1697 | } |
---|
1698 | |
---|
1699 | self_delimiting: |
---|
1700 | fseek (ct->c_fp, 0L, SEEK_SET); |
---|
1701 | |
---|
1702 | if (fflush (ce->ce_fp)) { |
---|
1703 | content_error (ce->ce_file, ct, "error writing to"); |
---|
1704 | goto clean_up; |
---|
1705 | } |
---|
1706 | |
---|
1707 | if (digested) { |
---|
1708 | unsigned char digest[16]; |
---|
1709 | |
---|
1710 | MD5Final (digest, &mdContext); |
---|
1711 | if (memcmp((char *) digest, (char *) ct->c_digest, |
---|
1712 | sizeof(digest) / sizeof(digest[0]))) |
---|
1713 | content_error (NULL, ct, |
---|
1714 | "content integrity suspect (digest mismatch) -- continuing"); |
---|
1715 | else |
---|
1716 | if (debugsw) |
---|
1717 | fprintf (stderr, "content integrity confirmed\n"); |
---|
1718 | } |
---|
1719 | |
---|
1720 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
1721 | |
---|
1722 | ready_to_go: |
---|
1723 | *file = ce->ce_file; |
---|
1724 | return fileno (ce->ce_fp); |
---|
1725 | |
---|
1726 | clean_up: |
---|
1727 | free_encoding (ct, 0); |
---|
1728 | return NOTOK; |
---|
1729 | } |
---|
1730 | |
---|
1731 | |
---|
1732 | /* |
---|
1733 | * QUOTED PRINTABLE |
---|
1734 | */ |
---|
1735 | |
---|
1736 | static char hex2nib[0x80] = { |
---|
1737 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1738 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1739 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1740 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1741 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1742 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1743 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
---|
1744 | 0x08, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1745 | 0x00, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x00, |
---|
1746 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1747 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1748 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1749 | 0x00, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, |
---|
1750 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1751 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
---|
1752 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
---|
1753 | }; |
---|
1754 | |
---|
1755 | |
---|
1756 | static int |
---|
1757 | InitQuoted (CT ct) |
---|
1758 | { |
---|
1759 | return init_encoding (ct, openQuoted); |
---|
1760 | } |
---|
1761 | |
---|
1762 | |
---|
1763 | static int |
---|
1764 | openQuoted (CT ct, char **file) |
---|
1765 | { |
---|
1766 | int cc, digested, len, quoted; |
---|
1767 | char *cp, *ep; |
---|
1768 | char buffer[BUFSIZ]; |
---|
1769 | unsigned char mask; |
---|
1770 | CE ce; |
---|
1771 | MD5_CTX mdContext; |
---|
1772 | |
---|
1773 | ce = ct->c_cefile; |
---|
1774 | if (ce->ce_fp) { |
---|
1775 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
1776 | goto ready_to_go; |
---|
1777 | } |
---|
1778 | |
---|
1779 | if (ce->ce_file) { |
---|
1780 | if ((ce->ce_fp = fopen (ce->ce_file, "r")) == NULL) { |
---|
1781 | content_error (ce->ce_file, ct, "unable to fopen for reading"); |
---|
1782 | return NOTOK; |
---|
1783 | } |
---|
1784 | goto ready_to_go; |
---|
1785 | } |
---|
1786 | |
---|
1787 | if (*file == NULL) { |
---|
1788 | ce->ce_file = add (m_scratch ("", tmp), NULL); |
---|
1789 | ce->ce_unlink = 1; |
---|
1790 | } else { |
---|
1791 | ce->ce_file = add (*file, NULL); |
---|
1792 | ce->ce_unlink = 0; |
---|
1793 | } |
---|
1794 | |
---|
1795 | if ((ce->ce_fp = fopen (ce->ce_file, "w+")) == NULL) { |
---|
1796 | content_error (ce->ce_file, ct, "unable to fopen for reading/writing"); |
---|
1797 | return NOTOK; |
---|
1798 | } |
---|
1799 | |
---|
1800 | if ((len = ct->c_end - ct->c_begin) < 0) |
---|
1801 | adios (NULL, "internal error(2)"); |
---|
1802 | |
---|
1803 | if (!ct->c_fp && (ct->c_fp = fopen (ct->c_file, "r")) == NULL) { |
---|
1804 | content_error (ct->c_file, ct, "unable to open for reading"); |
---|
1805 | return NOTOK; |
---|
1806 | } |
---|
1807 | |
---|
1808 | if ((digested = ct->c_digested)) |
---|
1809 | MD5Init (&mdContext); |
---|
1810 | |
---|
1811 | quoted = 0; |
---|
1812 | #ifdef lint |
---|
1813 | mask = 0; |
---|
1814 | #endif |
---|
1815 | |
---|
1816 | fseek (ct->c_fp, ct->c_begin, SEEK_SET); |
---|
1817 | while (len > 0) { |
---|
1818 | char *dp; |
---|
1819 | |
---|
1820 | if (fgets (buffer, sizeof(buffer) - 1, ct->c_fp) == NULL) { |
---|
1821 | content_error (NULL, ct, "premature eof"); |
---|
1822 | goto clean_up; |
---|
1823 | } |
---|
1824 | |
---|
1825 | if ((cc = strlen (buffer)) > len) |
---|
1826 | cc = len; |
---|
1827 | len -= cc; |
---|
1828 | |
---|
1829 | for (ep = (cp = buffer) + cc - 1; cp <= ep; ep--) |
---|
1830 | if (!isspace (*ep)) |
---|
1831 | break; |
---|
1832 | *++ep = '\n', ep++; |
---|
1833 | |
---|
1834 | for (; cp < ep; cp++) { |
---|
1835 | if (quoted) { |
---|
1836 | if (quoted > 1) { |
---|
1837 | if (!isxdigit (*cp)) { |
---|
1838 | invalid_hex: |
---|
1839 | dp = "expecting hexidecimal-digit"; |
---|
1840 | goto invalid_encoding; |
---|
1841 | } |
---|
1842 | mask <<= 4; |
---|
1843 | mask |= hex2nib[*cp & 0x7f]; |
---|
1844 | putc (mask, ce->ce_fp); |
---|
1845 | if (digested) |
---|
1846 | MD5Update (&mdContext, &mask, 1); |
---|
1847 | } else { |
---|
1848 | switch (*cp) { |
---|
1849 | case ':': |
---|
1850 | putc (*cp, ce->ce_fp); |
---|
1851 | if (digested) |
---|
1852 | MD5Update (&mdContext, (unsigned char *) ":", 1); |
---|
1853 | break; |
---|
1854 | |
---|
1855 | default: |
---|
1856 | if (!isxdigit (*cp)) |
---|
1857 | goto invalid_hex; |
---|
1858 | mask = hex2nib[*cp & 0x7f]; |
---|
1859 | quoted = 2; |
---|
1860 | continue; |
---|
1861 | } |
---|
1862 | } |
---|
1863 | |
---|
1864 | if (ferror (ce->ce_fp)) { |
---|
1865 | content_error (ce->ce_file, ct, "error writing to"); |
---|
1866 | goto clean_up; |
---|
1867 | } |
---|
1868 | quoted = 0; |
---|
1869 | continue; |
---|
1870 | } |
---|
1871 | |
---|
1872 | switch (*cp) { |
---|
1873 | default: |
---|
1874 | if (*cp < '!' || *cp > '~') { |
---|
1875 | int i; |
---|
1876 | dp = "expecting character in range [!..~]"; |
---|
1877 | |
---|
1878 | invalid_encoding: |
---|
1879 | i = strlen (invo_name) + 2; |
---|
1880 | content_error (NULL, ct, |
---|
1881 | "invalid QUOTED-PRINTABLE encoding -- %s,\n%*.*sbut got char 0x%x", |
---|
1882 | dp, i, i, "", *cp); |
---|
1883 | goto clean_up; |
---|
1884 | } |
---|
1885 | /* and fall...*/ |
---|
1886 | case ' ': |
---|
1887 | case '\t': |
---|
1888 | case '\n': |
---|
1889 | putc (*cp, ce->ce_fp); |
---|
1890 | if (digested) { |
---|
1891 | if (*cp == '\n') |
---|
1892 | MD5Update (&mdContext, (unsigned char *) "\r\n",2); |
---|
1893 | else |
---|
1894 | MD5Update (&mdContext, (unsigned char *) cp, 1); |
---|
1895 | } |
---|
1896 | if (ferror (ce->ce_fp)) { |
---|
1897 | content_error (ce->ce_file, ct, "error writing to"); |
---|
1898 | goto clean_up; |
---|
1899 | } |
---|
1900 | break; |
---|
1901 | |
---|
1902 | case '=': |
---|
1903 | if (*++cp != '\n') { |
---|
1904 | quoted = 1; |
---|
1905 | cp--; |
---|
1906 | } |
---|
1907 | break; |
---|
1908 | } |
---|
1909 | } |
---|
1910 | } |
---|
1911 | if (quoted) { |
---|
1912 | content_error (NULL, ct, |
---|
1913 | "invalid QUOTED-PRINTABLE encoding -- end-of-content while still quoting"); |
---|
1914 | goto clean_up; |
---|
1915 | } |
---|
1916 | |
---|
1917 | fseek (ct->c_fp, 0L, SEEK_SET); |
---|
1918 | |
---|
1919 | if (fflush (ce->ce_fp)) { |
---|
1920 | content_error (ce->ce_file, ct, "error writing to"); |
---|
1921 | goto clean_up; |
---|
1922 | } |
---|
1923 | |
---|
1924 | if (digested) { |
---|
1925 | unsigned char digest[16]; |
---|
1926 | |
---|
1927 | MD5Final (digest, &mdContext); |
---|
1928 | if (memcmp((char *) digest, (char *) ct->c_digest, |
---|
1929 | sizeof(digest) / sizeof(digest[0]))) |
---|
1930 | content_error (NULL, ct, |
---|
1931 | "content integrity suspect (digest mismatch) -- continuing"); |
---|
1932 | else |
---|
1933 | if (debugsw) |
---|
1934 | fprintf (stderr, "content integrity confirmed\n"); |
---|
1935 | } |
---|
1936 | |
---|
1937 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
1938 | |
---|
1939 | ready_to_go: |
---|
1940 | *file = ce->ce_file; |
---|
1941 | return fileno (ce->ce_fp); |
---|
1942 | |
---|
1943 | clean_up: |
---|
1944 | free_encoding (ct, 0); |
---|
1945 | return NOTOK; |
---|
1946 | } |
---|
1947 | |
---|
1948 | |
---|
1949 | /* |
---|
1950 | * 7BIT |
---|
1951 | */ |
---|
1952 | |
---|
1953 | static int |
---|
1954 | Init7Bit (CT ct) |
---|
1955 | { |
---|
1956 | if (init_encoding (ct, open7Bit) == NOTOK) |
---|
1957 | return NOTOK; |
---|
1958 | |
---|
1959 | ct->c_cesizefnx = NULL; /* no need to decode for real size */ |
---|
1960 | return OK; |
---|
1961 | } |
---|
1962 | |
---|
1963 | |
---|
1964 | static int |
---|
1965 | open7Bit (CT ct, char **file) |
---|
1966 | { |
---|
1967 | int cc, fd, len; |
---|
1968 | char buffer[BUFSIZ]; |
---|
1969 | CE ce; |
---|
1970 | |
---|
1971 | ce = ct->c_cefile; |
---|
1972 | if (ce->ce_fp) { |
---|
1973 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
1974 | goto ready_to_go; |
---|
1975 | } |
---|
1976 | |
---|
1977 | if (ce->ce_file) { |
---|
1978 | if ((ce->ce_fp = fopen (ce->ce_file, "r")) == NULL) { |
---|
1979 | content_error (ce->ce_file, ct, "unable to fopen for reading"); |
---|
1980 | return NOTOK; |
---|
1981 | } |
---|
1982 | goto ready_to_go; |
---|
1983 | } |
---|
1984 | |
---|
1985 | if (*file == NULL) { |
---|
1986 | ce->ce_file = add (m_scratch ("", tmp), NULL); |
---|
1987 | ce->ce_unlink = 1; |
---|
1988 | } else { |
---|
1989 | ce->ce_file = add (*file, NULL); |
---|
1990 | ce->ce_unlink = 0; |
---|
1991 | } |
---|
1992 | |
---|
1993 | if ((ce->ce_fp = fopen (ce->ce_file, "w+")) == NULL) { |
---|
1994 | content_error (ce->ce_file, ct, "unable to fopen for reading/writing"); |
---|
1995 | return NOTOK; |
---|
1996 | } |
---|
1997 | |
---|
1998 | if (ct->c_type == CT_MULTIPART) { |
---|
1999 | char **ap, **ep; |
---|
2000 | CI ci = &ct->c_ctinfo; |
---|
2001 | |
---|
2002 | len = 0; |
---|
2003 | fprintf (ce->ce_fp, "%s: %s/%s", TYPE_FIELD, ci->ci_type, ci->ci_subtype); |
---|
2004 | len += strlen (TYPE_FIELD) + 2 + strlen (ci->ci_type) |
---|
2005 | + 1 + strlen (ci->ci_subtype); |
---|
2006 | for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) { |
---|
2007 | putc (';', ce->ce_fp); |
---|
2008 | len++; |
---|
2009 | |
---|
2010 | snprintf (buffer, sizeof(buffer), "%s=\"%s\"", *ap, *ep); |
---|
2011 | |
---|
2012 | if (len + 1 + (cc = strlen (buffer)) >= CPERLIN) { |
---|
2013 | fputs ("\n\t", ce->ce_fp); |
---|
2014 | len = 8; |
---|
2015 | } else { |
---|
2016 | putc (' ', ce->ce_fp); |
---|
2017 | len++; |
---|
2018 | } |
---|
2019 | fprintf (ce->ce_fp, "%s", buffer); |
---|
2020 | len += cc; |
---|
2021 | } |
---|
2022 | |
---|
2023 | if (ci->ci_comment) { |
---|
2024 | if (len + 1 + (cc = 2 + strlen (ci->ci_comment)) >= CPERLIN) { |
---|
2025 | fputs ("\n\t", ce->ce_fp); |
---|
2026 | len = 8; |
---|
2027 | } |
---|
2028 | else { |
---|
2029 | putc (' ', ce->ce_fp); |
---|
2030 | len++; |
---|
2031 | } |
---|
2032 | fprintf (ce->ce_fp, "(%s)", ci->ci_comment); |
---|
2033 | len += cc; |
---|
2034 | } |
---|
2035 | fprintf (ce->ce_fp, "\n"); |
---|
2036 | if (ct->c_id) |
---|
2037 | fprintf (ce->ce_fp, "%s:%s", ID_FIELD, ct->c_id); |
---|
2038 | if (ct->c_descr) |
---|
2039 | fprintf (ce->ce_fp, "%s:%s", DESCR_FIELD, ct->c_descr); |
---|
2040 | fprintf (ce->ce_fp, "\n"); |
---|
2041 | } |
---|
2042 | |
---|
2043 | if ((len = ct->c_end - ct->c_begin) < 0) |
---|
2044 | adios (NULL, "internal error(3)"); |
---|
2045 | |
---|
2046 | if (!ct->c_fp && (ct->c_fp = fopen (ct->c_file, "r")) == NULL) { |
---|
2047 | content_error (ct->c_file, ct, "unable to open for reading"); |
---|
2048 | return NOTOK; |
---|
2049 | } |
---|
2050 | |
---|
2051 | lseek (fd = fileno (ct->c_fp), (off_t) ct->c_begin, SEEK_SET); |
---|
2052 | while (len > 0) |
---|
2053 | switch (cc = read (fd, buffer, sizeof(buffer) - 1)) { |
---|
2054 | case NOTOK: |
---|
2055 | content_error (ct->c_file, ct, "error reading from"); |
---|
2056 | goto clean_up; |
---|
2057 | |
---|
2058 | case OK: |
---|
2059 | content_error (NULL, ct, "premature eof"); |
---|
2060 | goto clean_up; |
---|
2061 | |
---|
2062 | default: |
---|
2063 | if (cc > len) |
---|
2064 | cc = len; |
---|
2065 | len -= cc; |
---|
2066 | |
---|
2067 | fwrite (buffer, sizeof(*buffer), cc, ce->ce_fp); |
---|
2068 | if (ferror (ce->ce_fp)) { |
---|
2069 | content_error (ce->ce_file, ct, "error writing to"); |
---|
2070 | goto clean_up; |
---|
2071 | } |
---|
2072 | } |
---|
2073 | |
---|
2074 | fseek (ct->c_fp, 0L, SEEK_SET); |
---|
2075 | |
---|
2076 | if (fflush (ce->ce_fp)) { |
---|
2077 | content_error (ce->ce_file, ct, "error writing to"); |
---|
2078 | goto clean_up; |
---|
2079 | } |
---|
2080 | |
---|
2081 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
2082 | |
---|
2083 | ready_to_go: |
---|
2084 | *file = ce->ce_file; |
---|
2085 | return fileno (ce->ce_fp); |
---|
2086 | |
---|
2087 | clean_up: |
---|
2088 | free_encoding (ct, 0); |
---|
2089 | return NOTOK; |
---|
2090 | } |
---|
2091 | |
---|
2092 | |
---|
2093 | /* |
---|
2094 | * External |
---|
2095 | */ |
---|
2096 | |
---|
2097 | static int |
---|
2098 | openExternal (CT ct, CT cb, CE ce, char **file, int *fd) |
---|
2099 | { |
---|
2100 | char cachefile[BUFSIZ]; |
---|
2101 | |
---|
2102 | if (ce->ce_fp) { |
---|
2103 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
2104 | goto ready_already; |
---|
2105 | } |
---|
2106 | |
---|
2107 | if (ce->ce_file) { |
---|
2108 | if ((ce->ce_fp = fopen (ce->ce_file, "r")) == NULL) { |
---|
2109 | content_error (ce->ce_file, ct, "unable to fopen for reading"); |
---|
2110 | return NOTOK; |
---|
2111 | } |
---|
2112 | goto ready_already; |
---|
2113 | } |
---|
2114 | |
---|
2115 | if (find_cache (ct, rcachesw, (int *) 0, cb->c_id, |
---|
2116 | cachefile, sizeof(cachefile)) != NOTOK) { |
---|
2117 | if ((ce->ce_fp = fopen (cachefile, "r"))) { |
---|
2118 | ce->ce_file = getcpy (cachefile); |
---|
2119 | ce->ce_unlink = 0; |
---|
2120 | goto ready_already; |
---|
2121 | } else { |
---|
2122 | admonish (cachefile, "unable to fopen for reading"); |
---|
2123 | } |
---|
2124 | } |
---|
2125 | |
---|
2126 | return OK; |
---|
2127 | |
---|
2128 | ready_already: |
---|
2129 | *file = ce->ce_file; |
---|
2130 | *fd = fileno (ce->ce_fp); |
---|
2131 | return DONE; |
---|
2132 | } |
---|
2133 | |
---|
2134 | /* |
---|
2135 | * File |
---|
2136 | */ |
---|
2137 | |
---|
2138 | static int |
---|
2139 | InitFile (CT ct) |
---|
2140 | { |
---|
2141 | return init_encoding (ct, openFile); |
---|
2142 | } |
---|
2143 | |
---|
2144 | |
---|
2145 | static int |
---|
2146 | openFile (CT ct, char **file) |
---|
2147 | { |
---|
2148 | int fd, cachetype; |
---|
2149 | char cachefile[BUFSIZ]; |
---|
2150 | struct exbody *e = ct->c_ctexbody; |
---|
2151 | CE ce = ct->c_cefile; |
---|
2152 | |
---|
2153 | switch (openExternal (e->eb_parent, e->eb_content, ce, file, &fd)) { |
---|
2154 | case NOTOK: |
---|
2155 | return NOTOK; |
---|
2156 | |
---|
2157 | case OK: |
---|
2158 | break; |
---|
2159 | |
---|
2160 | case DONE: |
---|
2161 | return fd; |
---|
2162 | } |
---|
2163 | |
---|
2164 | if (!e->eb_name) { |
---|
2165 | content_error (NULL, ct, "missing name parameter"); |
---|
2166 | return NOTOK; |
---|
2167 | } |
---|
2168 | |
---|
2169 | ce->ce_file = getcpy (e->eb_name); |
---|
2170 | ce->ce_unlink = 0; |
---|
2171 | |
---|
2172 | if ((ce->ce_fp = fopen (ce->ce_file, "r")) == NULL) { |
---|
2173 | content_error (ce->ce_file, ct, "unable to fopen for reading"); |
---|
2174 | return NOTOK; |
---|
2175 | } |
---|
2176 | |
---|
2177 | if ((!e->eb_permission || strcasecmp (e->eb_permission, "read-write")) |
---|
2178 | && find_cache (NULL, wcachesw, &cachetype, e->eb_content->c_id, |
---|
2179 | cachefile, sizeof(cachefile)) != NOTOK) { |
---|
2180 | int mask; |
---|
2181 | FILE *fp; |
---|
2182 | |
---|
2183 | mask = umask (cachetype ? ~m_gmprot () : 0222); |
---|
2184 | if ((fp = fopen (cachefile, "w"))) { |
---|
2185 | int cc; |
---|
2186 | char buffer[BUFSIZ]; |
---|
2187 | FILE *gp = ce->ce_fp; |
---|
2188 | |
---|
2189 | fseek (gp, 0L, SEEK_SET); |
---|
2190 | |
---|
2191 | while ((cc = fread (buffer, sizeof(*buffer), sizeof(buffer), gp)) |
---|
2192 | > 0) |
---|
2193 | fwrite (buffer, sizeof(*buffer), cc, fp); |
---|
2194 | fflush (fp); |
---|
2195 | |
---|
2196 | if (ferror (gp)) { |
---|
2197 | admonish (ce->ce_file, "error reading"); |
---|
2198 | unlink (cachefile); |
---|
2199 | } |
---|
2200 | else |
---|
2201 | if (ferror (fp)) { |
---|
2202 | admonish (cachefile, "error writing"); |
---|
2203 | unlink (cachefile); |
---|
2204 | } |
---|
2205 | fclose (fp); |
---|
2206 | } |
---|
2207 | umask (mask); |
---|
2208 | } |
---|
2209 | |
---|
2210 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
2211 | *file = ce->ce_file; |
---|
2212 | return fileno (ce->ce_fp); |
---|
2213 | } |
---|
2214 | |
---|
2215 | /* |
---|
2216 | * FTP |
---|
2217 | */ |
---|
2218 | |
---|
2219 | static int |
---|
2220 | InitFTP (CT ct) |
---|
2221 | { |
---|
2222 | return init_encoding (ct, openFTP); |
---|
2223 | } |
---|
2224 | |
---|
2225 | |
---|
2226 | static int |
---|
2227 | openFTP (CT ct, char **file) |
---|
2228 | { |
---|
2229 | int cachetype, caching, fd; |
---|
2230 | int len, buflen; |
---|
2231 | char *bp, *ftp, *user, *pass; |
---|
2232 | char buffer[BUFSIZ], cachefile[BUFSIZ]; |
---|
2233 | struct exbody *e; |
---|
2234 | CE ce; |
---|
2235 | static char *username = NULL; |
---|
2236 | static char *password = NULL; |
---|
2237 | |
---|
2238 | e = ct->c_ctexbody; |
---|
2239 | ce = ct->c_cefile; |
---|
2240 | |
---|
2241 | if ((ftp = context_find (nmhaccessftp)) && !*ftp) |
---|
2242 | ftp = NULL; |
---|
2243 | |
---|
2244 | #ifndef BUILTIN_FTP |
---|
2245 | if (!ftp) |
---|
2246 | return NOTOK; |
---|
2247 | #endif |
---|
2248 | |
---|
2249 | switch (openExternal (e->eb_parent, e->eb_content, ce, file, &fd)) { |
---|
2250 | case NOTOK: |
---|
2251 | return NOTOK; |
---|
2252 | |
---|
2253 | case OK: |
---|
2254 | break; |
---|
2255 | |
---|
2256 | case DONE: |
---|
2257 | return fd; |
---|
2258 | } |
---|
2259 | |
---|
2260 | if (!e->eb_name || !e->eb_site) { |
---|
2261 | content_error (NULL, ct, "missing %s parameter", |
---|
2262 | e->eb_name ? "site": "name"); |
---|
2263 | return NOTOK; |
---|
2264 | } |
---|
2265 | |
---|
2266 | if (xpid) { |
---|
2267 | if (xpid < 0) |
---|
2268 | xpid = -xpid; |
---|
2269 | pidcheck (pidwait (xpid, NOTOK)); |
---|
2270 | xpid = 0; |
---|
2271 | } |
---|
2272 | |
---|
2273 | /* Get the buffer ready to go */ |
---|
2274 | bp = buffer; |
---|
2275 | buflen = sizeof(buffer); |
---|
2276 | |
---|
2277 | /* |
---|
2278 | * Construct the query message for user |
---|
2279 | */ |
---|
2280 | snprintf (bp, buflen, "Retrieve %s", e->eb_name); |
---|
2281 | len = strlen (bp); |
---|
2282 | bp += len; |
---|
2283 | buflen -= len; |
---|
2284 | |
---|
2285 | if (e->eb_partno) { |
---|
2286 | snprintf (bp, buflen, " (content %s)", e->eb_partno); |
---|
2287 | len = strlen (bp); |
---|
2288 | bp += len; |
---|
2289 | buflen -= len; |
---|
2290 | } |
---|
2291 | |
---|
2292 | snprintf (bp, buflen, "\n using %sFTP from site %s", |
---|
2293 | e->eb_flags ? "anonymous " : "", e->eb_site); |
---|
2294 | len = strlen (bp); |
---|
2295 | bp += len; |
---|
2296 | buflen -= len; |
---|
2297 | |
---|
2298 | if (e->eb_size > 0) { |
---|
2299 | snprintf (bp, buflen, " (%lu octets)", e->eb_size); |
---|
2300 | len = strlen (bp); |
---|
2301 | bp += len; |
---|
2302 | buflen -= len; |
---|
2303 | } |
---|
2304 | snprintf (bp, buflen, "? "); |
---|
2305 | |
---|
2306 | /* |
---|
2307 | * Now, check the answer |
---|
2308 | */ |
---|
2309 | if (!getanswer (buffer)) |
---|
2310 | return NOTOK; |
---|
2311 | |
---|
2312 | if (e->eb_flags) { |
---|
2313 | user = "anonymous"; |
---|
2314 | snprintf (buffer, sizeof(buffer), "%s@%s", getusername (), LocalName ()); |
---|
2315 | pass = buffer; |
---|
2316 | } else { |
---|
2317 | ruserpass (e->eb_site, &username, &password); |
---|
2318 | user = username; |
---|
2319 | pass = password; |
---|
2320 | } |
---|
2321 | |
---|
2322 | ce->ce_unlink = (*file == NULL); |
---|
2323 | caching = 0; |
---|
2324 | cachefile[0] = '\0'; |
---|
2325 | if ((!e->eb_permission || strcasecmp (e->eb_permission, "read-write")) |
---|
2326 | && find_cache (NULL, wcachesw, &cachetype, e->eb_content->c_id, |
---|
2327 | cachefile, sizeof(cachefile)) != NOTOK) { |
---|
2328 | if (*file == NULL) { |
---|
2329 | ce->ce_unlink = 0; |
---|
2330 | caching = 1; |
---|
2331 | } |
---|
2332 | } |
---|
2333 | |
---|
2334 | if (*file) |
---|
2335 | ce->ce_file = add (*file, NULL); |
---|
2336 | else if (caching) |
---|
2337 | ce->ce_file = add (cachefile, NULL); |
---|
2338 | else |
---|
2339 | ce->ce_file = add (m_scratch ("", tmp), NULL); |
---|
2340 | |
---|
2341 | if ((ce->ce_fp = fopen (ce->ce_file, "w+")) == NULL) { |
---|
2342 | content_error (ce->ce_file, ct, "unable to fopen for reading/writing"); |
---|
2343 | return NOTOK; |
---|
2344 | } |
---|
2345 | |
---|
2346 | #ifdef BUILTIN_FTP |
---|
2347 | if (ftp) |
---|
2348 | #endif |
---|
2349 | { |
---|
2350 | int child_id, i, vecp; |
---|
2351 | char *vec[9]; |
---|
2352 | |
---|
2353 | vecp = 0; |
---|
2354 | vec[vecp++] = r1bindex (ftp, '/'); |
---|
2355 | vec[vecp++] = e->eb_site; |
---|
2356 | vec[vecp++] = user; |
---|
2357 | vec[vecp++] = pass; |
---|
2358 | vec[vecp++] = e->eb_dir; |
---|
2359 | vec[vecp++] = e->eb_name; |
---|
2360 | vec[vecp++] = ce->ce_file, |
---|
2361 | vec[vecp++] = e->eb_mode && !strcasecmp (e->eb_mode, "ascii") |
---|
2362 | ? "ascii" : "binary"; |
---|
2363 | vec[vecp] = NULL; |
---|
2364 | |
---|
2365 | fflush (stdout); |
---|
2366 | |
---|
2367 | for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++) |
---|
2368 | sleep (5); |
---|
2369 | switch (child_id) { |
---|
2370 | case NOTOK: |
---|
2371 | adios ("fork", "unable to"); |
---|
2372 | /* NOTREACHED */ |
---|
2373 | |
---|
2374 | case OK: |
---|
2375 | close (fileno (ce->ce_fp)); |
---|
2376 | execvp (ftp, vec); |
---|
2377 | fprintf (stderr, "unable to exec "); |
---|
2378 | perror (ftp); |
---|
2379 | _exit (-1); |
---|
2380 | /* NOTREACHED */ |
---|
2381 | |
---|
2382 | default: |
---|
2383 | if (pidXwait (child_id, NULL)) { |
---|
2384 | #ifdef BUILTIN_FTP |
---|
2385 | losing_ftp: |
---|
2386 | #endif |
---|
2387 | username = password = NULL; |
---|
2388 | ce->ce_unlink = 1; |
---|
2389 | return NOTOK; |
---|
2390 | } |
---|
2391 | break; |
---|
2392 | } |
---|
2393 | } |
---|
2394 | #ifdef BUILTIN_FTP |
---|
2395 | else |
---|
2396 | if (ftp_get (e->eb_site, user, pass, e->eb_dir, e->eb_name, |
---|
2397 | ce->ce_file, |
---|
2398 | e->eb_mode && !strcasecmp (e->eb_mode, "ascii"), 0) |
---|
2399 | == NOTOK) |
---|
2400 | goto losing_ftp; |
---|
2401 | #endif |
---|
2402 | |
---|
2403 | if (cachefile[0]) |
---|
2404 | if (caching) |
---|
2405 | chmod (cachefile, cachetype ? m_gmprot () : 0444); |
---|
2406 | else { |
---|
2407 | int mask; |
---|
2408 | FILE *fp; |
---|
2409 | |
---|
2410 | mask = umask (cachetype ? ~m_gmprot () : 0222); |
---|
2411 | if ((fp = fopen (cachefile, "w"))) { |
---|
2412 | int cc; |
---|
2413 | FILE *gp = ce->ce_fp; |
---|
2414 | |
---|
2415 | fseek (gp, 0L, SEEK_SET); |
---|
2416 | |
---|
2417 | while ((cc = fread (buffer, sizeof(*buffer), sizeof(buffer), gp)) |
---|
2418 | > 0) |
---|
2419 | fwrite (buffer, sizeof(*buffer), cc, fp); |
---|
2420 | fflush (fp); |
---|
2421 | |
---|
2422 | if (ferror (gp)) { |
---|
2423 | admonish (ce->ce_file, "error reading"); |
---|
2424 | unlink (cachefile); |
---|
2425 | } |
---|
2426 | else |
---|
2427 | if (ferror (fp)) { |
---|
2428 | admonish (cachefile, "error writing"); |
---|
2429 | unlink (cachefile); |
---|
2430 | } |
---|
2431 | fclose (fp); |
---|
2432 | } |
---|
2433 | umask (mask); |
---|
2434 | } |
---|
2435 | |
---|
2436 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
2437 | *file = ce->ce_file; |
---|
2438 | return fileno (ce->ce_fp); |
---|
2439 | } |
---|
2440 | |
---|
2441 | |
---|
2442 | /* |
---|
2443 | * Mail |
---|
2444 | */ |
---|
2445 | |
---|
2446 | static int |
---|
2447 | InitMail (CT ct) |
---|
2448 | { |
---|
2449 | return init_encoding (ct, openMail); |
---|
2450 | } |
---|
2451 | |
---|
2452 | |
---|
2453 | static int |
---|
2454 | openMail (CT ct, char **file) |
---|
2455 | { |
---|
2456 | int child_id, fd, i, vecp; |
---|
2457 | int len, buflen; |
---|
2458 | char *bp, buffer[BUFSIZ], *vec[7]; |
---|
2459 | struct exbody *e = ct->c_ctexbody; |
---|
2460 | CE ce = ct->c_cefile; |
---|
2461 | |
---|
2462 | switch (openExternal (e->eb_parent, e->eb_content, ce, file, &fd)) { |
---|
2463 | case NOTOK: |
---|
2464 | return NOTOK; |
---|
2465 | |
---|
2466 | case OK: |
---|
2467 | break; |
---|
2468 | |
---|
2469 | case DONE: |
---|
2470 | return fd; |
---|
2471 | } |
---|
2472 | |
---|
2473 | if (!e->eb_server) { |
---|
2474 | content_error (NULL, ct, "missing server parameter"); |
---|
2475 | return NOTOK; |
---|
2476 | } |
---|
2477 | |
---|
2478 | if (xpid) { |
---|
2479 | if (xpid < 0) |
---|
2480 | xpid = -xpid; |
---|
2481 | pidcheck (pidwait (xpid, NOTOK)); |
---|
2482 | xpid = 0; |
---|
2483 | } |
---|
2484 | |
---|
2485 | /* Get buffer ready to go */ |
---|
2486 | bp = buffer; |
---|
2487 | buflen = sizeof(buffer); |
---|
2488 | |
---|
2489 | /* Now, construct query message */ |
---|
2490 | snprintf (bp, buflen, "Retrieve content"); |
---|
2491 | len = strlen (bp); |
---|
2492 | bp += len; |
---|
2493 | buflen -= len; |
---|
2494 | |
---|
2495 | if (e->eb_partno) { |
---|
2496 | snprintf (bp, buflen, " %s", e->eb_partno); |
---|
2497 | len = strlen (bp); |
---|
2498 | bp += len; |
---|
2499 | buflen -= len; |
---|
2500 | } |
---|
2501 | |
---|
2502 | snprintf (bp, buflen, " by asking %s\n\n%s\n? ", |
---|
2503 | e->eb_server, |
---|
2504 | e->eb_subject ? e->eb_subject : e->eb_body); |
---|
2505 | |
---|
2506 | /* Now, check answer */ |
---|
2507 | if (!getanswer (buffer)) |
---|
2508 | return NOTOK; |
---|
2509 | |
---|
2510 | vecp = 0; |
---|
2511 | vec[vecp++] = r1bindex (mailproc, '/'); |
---|
2512 | vec[vecp++] = e->eb_server; |
---|
2513 | vec[vecp++] = "-subject"; |
---|
2514 | vec[vecp++] = e->eb_subject ? e->eb_subject : "mail-server request"; |
---|
2515 | vec[vecp++] = "-body"; |
---|
2516 | vec[vecp++] = e->eb_body; |
---|
2517 | vec[vecp] = NULL; |
---|
2518 | |
---|
2519 | for (i = 0; (child_id = vfork ()) == NOTOK && i < 5; i++) |
---|
2520 | sleep (5); |
---|
2521 | switch (child_id) { |
---|
2522 | case NOTOK: |
---|
2523 | advise ("fork", "unable to"); |
---|
2524 | return NOTOK; |
---|
2525 | |
---|
2526 | case OK: |
---|
2527 | execvp (mailproc, vec); |
---|
2528 | fprintf (stderr, "unable to exec "); |
---|
2529 | perror (mailproc); |
---|
2530 | _exit (-1); |
---|
2531 | /* NOTREACHED */ |
---|
2532 | |
---|
2533 | default: |
---|
2534 | if (pidXwait (child_id, NULL) == OK) |
---|
2535 | advise (NULL, "request sent"); |
---|
2536 | break; |
---|
2537 | } |
---|
2538 | |
---|
2539 | if (*file == NULL) { |
---|
2540 | ce->ce_file = add (m_scratch ("", tmp), NULL); |
---|
2541 | ce->ce_unlink = 1; |
---|
2542 | } else { |
---|
2543 | ce->ce_file = add (*file, NULL); |
---|
2544 | ce->ce_unlink = 0; |
---|
2545 | } |
---|
2546 | |
---|
2547 | if ((ce->ce_fp = fopen (ce->ce_file, "w+")) == NULL) { |
---|
2548 | content_error (ce->ce_file, ct, "unable to fopen for reading/writing"); |
---|
2549 | return NOTOK; |
---|
2550 | } |
---|
2551 | |
---|
2552 | if (ct->c_showproc) |
---|
2553 | free (ct->c_showproc); |
---|
2554 | ct->c_showproc = add ("true", NULL); |
---|
2555 | |
---|
2556 | fseek (ce->ce_fp, 0L, SEEK_SET); |
---|
2557 | *file = ce->ce_file; |
---|
2558 | return fileno (ce->ce_fp); |
---|
2559 | } |
---|
2560 | |
---|
2561 | |
---|
2562 | static int |
---|
2563 | readDigest (CT ct, char *cp) |
---|
2564 | { |
---|
2565 | int bitno, skip; |
---|
2566 | unsigned long bits; |
---|
2567 | char *bp = cp; |
---|
2568 | unsigned char *dp, value, *ep; |
---|
2569 | unsigned char *b, *b1, *b2, *b3; |
---|
2570 | |
---|
2571 | b = (unsigned char *) &bits, |
---|
2572 | b1 = &b[endian > 0 ? 1 : 2], |
---|
2573 | b2 = &b[endian > 0 ? 2 : 1], |
---|
2574 | b3 = &b[endian > 0 ? 3 : 0]; |
---|
2575 | bitno = 18; |
---|
2576 | bits = 0L; |
---|
2577 | skip = 0; |
---|
2578 | |
---|
2579 | for (ep = (dp = ct->c_digest) |
---|
2580 | + sizeof(ct->c_digest) / sizeof(ct->c_digest[0]); *cp; cp++) |
---|
2581 | switch (*cp) { |
---|
2582 | default: |
---|
2583 | if (skip |
---|
2584 | || (*cp & 0x80) |
---|
2585 | || (value = b642nib[*cp & 0x7f]) > 0x3f) { |
---|
2586 | if (debugsw) |
---|
2587 | fprintf (stderr, "invalid BASE64 encoding\n"); |
---|
2588 | return NOTOK; |
---|
2589 | } |
---|
2590 | |
---|
2591 | bits |= value << bitno; |
---|
2592 | test_end: |
---|
2593 | if ((bitno -= 6) < 0) { |
---|
2594 | if (dp + (3 - skip) > ep) |
---|
2595 | goto invalid_digest; |
---|
2596 | *dp++ = *b1; |
---|
2597 | if (skip < 2) { |
---|
2598 | *dp++ = *b2; |
---|
2599 | if (skip < 1) |
---|
2600 | *dp++ = *b3; |
---|
2601 | } |
---|
2602 | bitno = 18; |
---|
2603 | bits = 0L; |
---|
2604 | skip = 0; |
---|
2605 | } |
---|
2606 | break; |
---|
2607 | |
---|
2608 | case '=': |
---|
2609 | if (++skip > 3) |
---|
2610 | goto self_delimiting; |
---|
2611 | goto test_end; |
---|
2612 | } |
---|
2613 | if (bitno != 18) { |
---|
2614 | if (debugsw) |
---|
2615 | fprintf (stderr, "premature ending (bitno %d)\n", bitno); |
---|
2616 | |
---|
2617 | return NOTOK; |
---|
2618 | } |
---|
2619 | self_delimiting: |
---|
2620 | if (dp != ep) { |
---|
2621 | invalid_digest: |
---|
2622 | if (debugsw) { |
---|
2623 | while (*cp) |
---|
2624 | cp++; |
---|
2625 | fprintf (stderr, "invalid MD5 digest (got %d octets)\n", |
---|
2626 | cp - bp); |
---|
2627 | } |
---|
2628 | |
---|
2629 | return NOTOK; |
---|
2630 | } |
---|
2631 | |
---|
2632 | if (debugsw) { |
---|
2633 | fprintf (stderr, "MD5 digest="); |
---|
2634 | for (dp = ct->c_digest; dp < ep; dp++) |
---|
2635 | fprintf (stderr, "%02x", *dp & 0xff); |
---|
2636 | fprintf (stderr, "\n"); |
---|
2637 | } |
---|
2638 | |
---|
2639 | return OK; |
---|
2640 | } |
---|