1 | |
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2 | /* |
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3 | * show.c -- show/list messages |
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4 | * |
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5 | * $Id: show.c,v 1.1.1.1 1999-02-07 18:14:17 danw 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 <h/mime.h> |
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10 | |
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11 | static struct swit switches[] = { |
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12 | #define CHECKMIMESW 0 |
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13 | { "checkmime", 0 }, |
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14 | #define NOCHECKMIMESW 1 |
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15 | { "nocheckmime", 0 }, |
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16 | #define HEADSW 2 |
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17 | { "header", 0 }, |
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18 | #define NHEADSW 3 |
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19 | { "noheader", 0 }, |
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20 | #define FORMSW 4 |
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21 | { "form formfile", 0 }, |
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22 | #define PROGSW 5 |
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23 | { "moreproc program", 0 }, |
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24 | #define NPROGSW 6 |
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25 | { "nomoreproc", 0 }, |
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26 | #define LENSW 7 |
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27 | { "length lines", 0 }, |
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28 | #define WIDTHSW 8 |
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29 | { "width columns", 0 }, |
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30 | #define SHOWSW 9 |
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31 | { "showproc program", 0 }, |
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32 | #define SHOWMIMESW 10 |
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33 | { "showmimeproc program", 0 }, |
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34 | #define NSHOWSW 11 |
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35 | { "noshowproc", 0 }, |
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36 | #define DRFTSW 12 |
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37 | { "draft", 0 }, |
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38 | #define FILESW 13 |
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39 | { "file file", -4 }, /* interface from showfile */ |
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40 | #define VERSIONSW 14 |
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41 | { "version", 0 }, |
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42 | #define HELPSW 15 |
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43 | { "help", 0 }, |
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44 | { NULL, 0 } |
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45 | }; |
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46 | |
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47 | /* |
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48 | * static prototypes |
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49 | */ |
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50 | static int is_nontext(char *); |
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51 | |
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52 | #define SHOW 0 |
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53 | #define NEXT 1 |
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54 | #define PREV 2 |
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55 | |
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56 | |
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57 | int |
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58 | main (int argc, char **argv) |
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59 | { |
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60 | int draftsw = 0, headersw = 1, msgp = 0; |
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61 | int nshow = 0, checkmime = 1, mime; |
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62 | int vecp = 1, procp = 1, isdf = 0, mode = SHOW, msgnum; |
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63 | char *cp, *maildir, *file = NULL, *folder = NULL, *proc; |
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64 | char buf[BUFSIZ], **argp, **arguments; |
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65 | char *msgs[MAXARGS], *vec[MAXARGS]; |
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66 | struct msgs *mp; |
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67 | |
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68 | #ifdef LOCALE |
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69 | setlocale(LC_ALL, ""); |
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70 | #endif |
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71 | invo_name = r1bindex (argv[0], '/'); |
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72 | |
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73 | /* read user profile/context */ |
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74 | context_read(); |
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75 | |
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76 | if (!strcasecmp (invo_name, "next")) { |
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77 | mode = NEXT; |
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78 | } else if (!strcasecmp (invo_name, "prev")) { |
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79 | mode = PREV; |
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80 | } |
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81 | arguments = getarguments (invo_name, argc, argv, 1); |
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82 | argp = arguments; |
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83 | |
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84 | while ((cp = *argp++)) { |
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85 | if (*cp == '-') { |
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86 | switch (smatch (++cp, switches)) { |
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87 | case AMBIGSW: |
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88 | ambigsw (cp, switches); |
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89 | done (1); |
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90 | case UNKWNSW: |
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91 | case NPROGSW: |
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92 | vec[vecp++] = --cp; |
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93 | continue; |
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94 | |
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95 | case HELPSW: |
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96 | snprintf (buf, sizeof(buf), |
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97 | "%s [+folder] %s[switches] [switches for showproc]", |
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98 | invo_name, mode == SHOW ? "[msgs] ": ""); |
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99 | print_help (buf, switches, 1); |
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100 | done (1); |
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101 | case VERSIONSW: |
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102 | print_version(invo_name); |
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103 | done (1); |
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104 | |
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105 | case DRFTSW: |
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106 | if (file) |
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107 | adios (NULL, "only one file at a time!"); |
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108 | draftsw++; |
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109 | if (mode == SHOW) |
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110 | continue; |
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111 | usage: |
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112 | adios (NULL, |
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113 | "usage: %s [+folder] [switches] [switches for showproc]", |
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114 | invo_name); |
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115 | case FILESW: |
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116 | if (mode != SHOW) |
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117 | goto usage; |
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118 | if (draftsw || file) |
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119 | adios (NULL, "only one file at a time!"); |
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120 | if (!(cp = *argp++) || *cp == '-') |
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121 | adios (NULL, "missing argument to %s", argp[-2]); |
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122 | file = path (cp, TFILE); |
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123 | continue; |
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124 | |
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125 | case HEADSW: |
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126 | headersw++; |
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127 | continue; |
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128 | case NHEADSW: |
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129 | headersw = 0; |
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130 | continue; |
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131 | |
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132 | case FORMSW: |
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133 | vec[vecp++] = --cp; |
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134 | if (!(cp = *argp++) || *cp == '-') |
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135 | adios (NULL, "missing argument to %s", argp[-2]); |
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136 | vec[vecp++] = getcpy (etcpath(cp)); |
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137 | continue; |
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138 | |
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139 | case PROGSW: |
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140 | case LENSW: |
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141 | case WIDTHSW: |
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142 | vec[vecp++] = --cp; |
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143 | if (!(cp = *argp++) || *cp == '-') |
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144 | adios (NULL, "missing argument to %s", argp[-2]); |
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145 | vec[vecp++] = cp; |
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146 | continue; |
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147 | |
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148 | case SHOWSW: |
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149 | if (!(showproc = *argp++) || *showproc == '-') |
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150 | adios (NULL, "missing argument to %s", argp[-2]); |
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151 | nshow = 0; |
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152 | continue; |
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153 | case NSHOWSW: |
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154 | nshow++; |
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155 | continue; |
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156 | |
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157 | case SHOWMIMESW: |
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158 | if (!(showmimeproc = *argp++) || *showmimeproc == '-') |
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159 | adios (NULL, "missing argument to %s", argp[-2]); |
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160 | nshow = 0; |
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161 | continue; |
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162 | case CHECKMIMESW: |
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163 | checkmime++; |
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164 | continue; |
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165 | case NOCHECKMIMESW: |
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166 | checkmime = 0; |
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167 | continue; |
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168 | } |
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169 | } |
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170 | if (*cp == '+' || *cp == '@') { |
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171 | if (folder) |
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172 | adios (NULL, "only one folder at a time!"); |
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173 | else |
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174 | folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF); |
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175 | } else { |
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176 | if (mode != SHOW) |
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177 | goto usage; |
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178 | else |
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179 | msgs[msgp++] = cp; |
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180 | } |
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181 | } |
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182 | procp = vecp; |
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183 | |
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184 | if (!context_find ("path")) |
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185 | free (path ("./", TFOLDER)); |
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186 | |
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187 | if (draftsw || file) { |
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188 | if (msgp) |
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189 | adios (NULL, "only one file at a time!"); |
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190 | vec[vecp++] = draftsw |
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191 | ? getcpy (m_draft (folder, msgp ? msgs[0] : NULL, 1, &isdf)) |
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192 | : file; |
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193 | goto go_to_it; |
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194 | } |
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195 | |
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196 | #ifdef WHATNOW |
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197 | if (!msgp && !folder && mode == SHOW && (cp = getenv ("mhdraft")) && *cp) { |
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198 | draftsw++; |
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199 | vec[vecp++] = cp; |
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200 | goto go_to_it; |
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201 | } |
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202 | #endif /* WHATNOW */ |
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203 | |
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204 | if (!msgp) { |
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205 | switch (mode) { |
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206 | case NEXT: |
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207 | msgs[msgp++] = "next"; |
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208 | break; |
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209 | case PREV: |
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210 | msgs[msgp++] = "prev"; |
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211 | break; |
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212 | default: |
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213 | msgs[msgp++] = "cur"; |
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214 | break; |
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215 | } |
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216 | } |
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217 | |
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218 | if (!folder) |
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219 | folder = getfolder (1); |
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220 | maildir = m_maildir (folder); |
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221 | |
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222 | if (chdir (maildir) == NOTOK) |
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223 | adios (maildir, "unable to change directory to"); |
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224 | |
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225 | /* read folder and create message structure */ |
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226 | if (!(mp = folder_read (folder))) |
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227 | adios (NULL, "unable to read folder %s", folder); |
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228 | |
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229 | /* check for empty folder */ |
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230 | if (mp->nummsg == 0) |
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231 | adios (NULL, "no messages in %s", folder); |
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232 | |
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233 | /* parse all the message ranges/sequences and set SELECTED */ |
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234 | for (msgnum = 0; msgnum < msgp; msgnum++) |
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235 | if (!m_convert (mp, msgs[msgnum])) |
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236 | done (1); |
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237 | |
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238 | /* |
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239 | * Set the SELECT_UNSEEN bit for all the SELECTED messages, |
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240 | * since we will use that as a tag to know which messages |
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241 | * to remove from the "unseen" sequence. |
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242 | */ |
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243 | for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) |
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244 | if (is_selected(mp, msgnum)) |
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245 | set_unseen (mp, msgnum); |
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246 | |
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247 | seq_setprev (mp); /* set the Previous-Sequence */ |
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248 | seq_setunseen (mp, 1); /* unset the Unseen-Sequence */ |
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249 | |
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250 | if (mp->numsel > MAXARGS - 2) |
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251 | adios (NULL, "more than %d messages for show exec", MAXARGS - 2); |
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252 | |
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253 | for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) |
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254 | if (is_selected(mp, msgnum)) |
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255 | vec[vecp++] = getcpy (m_name (msgnum)); |
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256 | |
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257 | seq_setcur (mp, mp->hghsel); /* update current message */ |
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258 | seq_save (mp); /* synchronize sequences */ |
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259 | context_replace (pfolder, folder); /* update current folder */ |
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260 | context_save (); /* save the context file */ |
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261 | |
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262 | if (headersw && vecp == 2) |
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263 | printf ("(Message %s:%s)\n", folder, vec[1]); |
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264 | |
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265 | go_to_it: ; |
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266 | fflush (stdout); |
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267 | |
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268 | vec[vecp] = NULL; |
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269 | |
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270 | /* |
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271 | * Decide which "proc" to use |
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272 | */ |
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273 | mime = 0; |
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274 | if (nshow) { |
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275 | proc = catproc; |
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276 | } else { |
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277 | /* check if any messages are non-text MIME messages */ |
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278 | if (checkmime && !getenv ("NOMHNPROC")) { |
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279 | if (!draftsw && !file) { |
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280 | /* loop through selected messages and check for MIME */ |
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281 | for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) |
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282 | if (is_selected (mp, msgnum) && is_nontext (m_name (msgnum))) { |
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283 | mime = 1; |
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284 | break; |
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285 | } |
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286 | } else { |
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287 | /* check the file or draft for MIME */ |
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288 | if (is_nontext (vec[vecp - 1])) |
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289 | mime = 1; |
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290 | } |
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291 | } |
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292 | |
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293 | /* Set the "proc" */ |
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294 | if (mime) |
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295 | proc = showmimeproc; |
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296 | else |
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297 | proc = showproc; |
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298 | } |
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299 | |
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300 | if (folder && !draftsw && !file) |
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301 | m_putenv ("mhfolder", folder); |
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302 | |
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303 | /* |
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304 | * For backward compatibility, if the "proc" is mhn, |
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305 | * then add "-show" option. Add "-file" if showing |
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306 | * file or draft. |
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307 | */ |
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308 | if (strcmp (r1bindex (proc, '/'), "mhn") == 0) { |
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309 | if (draftsw || file) { |
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310 | vec[vecp] = vec[vecp - 1]; |
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311 | vec[vecp - 1] = "-file"; |
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312 | vecp++; |
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313 | } |
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314 | vec[vecp++] = "-show"; |
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315 | vec[vecp] = NULL; |
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316 | } |
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317 | |
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318 | /* |
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319 | * If "proc" is mhl, then run it internally |
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320 | * rather than exec'ing it. |
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321 | */ |
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322 | if (strcmp (r1bindex (proc, '/'), "mhl") == 0) { |
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323 | vec[0] = "mhl"; |
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324 | mhl (vecp, vec); |
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325 | done (0); |
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326 | } |
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327 | |
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328 | /* |
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329 | * If you are not using a nmh command as your "proc", then |
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330 | * add the path to the message names. Currently, we are just |
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331 | * checking for mhn here, since we've already taken care of mhl. |
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332 | */ |
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333 | if (!strcmp (r1bindex (proc, '/'), "mhl") |
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334 | && !draftsw |
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335 | && !file |
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336 | && chdir (maildir = concat (m_maildir (""), "/", NULL)) != NOTOK) { |
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337 | mp->foldpath = concat (mp->foldpath, "/", NULL); |
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338 | cp = ssequal (maildir, mp->foldpath) |
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339 | ? mp->foldpath + strlen (maildir) |
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340 | : mp->foldpath; |
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341 | for (msgnum = procp; msgnum < vecp; msgnum++) |
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342 | vec[msgnum] = concat (cp, vec[msgnum], NULL); |
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343 | } |
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344 | |
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345 | vec[0] = r1bindex (proc, '/'); |
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346 | execvp (proc, vec); |
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347 | adios (proc, "unable to exec"); |
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348 | } |
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349 | |
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350 | /* |
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351 | * Cheat: we are loaded with adrparse, which wants a routine called |
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352 | * OfficialName(). We call adrparse:getm() with the correct arguments |
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353 | * to prevent OfficialName() from being called. Hence, the following |
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354 | * is to keep the loader happy. |
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355 | */ |
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356 | |
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357 | char * |
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358 | OfficialName (char *name) |
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359 | { |
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360 | return name; |
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361 | } |
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362 | |
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363 | |
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364 | /* |
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365 | * Check if a message or file contains any non-text parts |
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366 | */ |
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367 | static int |
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368 | is_nontext (char *msgnam) |
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369 | { |
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370 | int result, state; |
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371 | char *bp, *cp, *dp; |
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372 | char buf[BUFSIZ], name[NAMESZ]; |
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373 | FILE *fp; |
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374 | |
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375 | if ((fp = fopen (msgnam, "r")) == NULL) |
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376 | return 0; |
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377 | |
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378 | for (state = FLD;;) { |
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379 | switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) { |
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380 | case FLD: |
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381 | case FLDPLUS: |
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382 | case FLDEOF: |
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383 | /* |
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384 | * Check Content-Type field |
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385 | */ |
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386 | if (!strcasecmp (name, TYPE_FIELD)) { |
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387 | int passno; |
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388 | char c; |
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389 | |
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390 | cp = add (buf, NULL); |
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391 | while (state == FLDPLUS) { |
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392 | state = m_getfld (state, name, buf, sizeof(buf), fp); |
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393 | cp = add (buf, cp); |
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394 | } |
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395 | bp = cp; |
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396 | passno = 1; |
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397 | |
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398 | again: |
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399 | for (; isspace (*bp); bp++) |
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400 | continue; |
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401 | if (*bp == '(') { |
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402 | int i; |
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403 | |
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404 | for (bp++, i = 0;;) { |
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405 | switch (*bp++) { |
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406 | case '\0': |
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407 | invalid: |
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408 | result = 0; |
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409 | goto out; |
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410 | case '\\': |
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411 | if (*bp++ == '\0') |
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412 | goto invalid; |
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413 | continue; |
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414 | case '(': |
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415 | i++; |
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416 | /* and fall... */ |
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417 | default: |
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418 | continue; |
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419 | case ')': |
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420 | if (--i < 0) |
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421 | break; |
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422 | continue; |
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423 | } |
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424 | break; |
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425 | } |
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426 | } |
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427 | if (passno == 2) { |
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428 | if (*bp != '/') |
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429 | goto invalid; |
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430 | bp++; |
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431 | passno = 3; |
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432 | goto again; |
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433 | } |
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434 | for (dp = bp; istoken (*dp); dp++) |
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435 | continue; |
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436 | c = *dp; |
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437 | *dp = '\0'; |
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438 | if (!*bp) |
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439 | goto invalid; |
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440 | if (passno > 1) { |
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441 | if ((result = (strcasecmp (bp, "plain") != 0))) |
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442 | goto out; |
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443 | *dp = c; |
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444 | for (dp++; isspace (*dp); dp++) |
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445 | continue; |
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446 | if (*dp) { |
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447 | if ((result = !uprf (dp, "charset"))) |
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448 | goto out; |
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449 | dp += sizeof("charset") - 1; |
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450 | while (isspace (*dp)) |
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451 | dp++; |
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452 | if (*dp++ != '=') |
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453 | goto invalid; |
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454 | while (isspace (*dp)) |
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455 | dp++; |
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456 | if (*dp == '"') { |
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457 | if ((bp = strchr(++dp, '"'))) |
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458 | *bp = '\0'; |
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459 | } else { |
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460 | for (bp = dp; *bp; bp++) |
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461 | if (isspace (*bp)) { |
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462 | *bp = '\0'; |
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463 | break; |
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464 | } |
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465 | } |
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466 | } else { |
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467 | /* Default character set */ |
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468 | dp = "US-ASCII"; |
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469 | } |
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470 | /* Check the character set */ |
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471 | result = !check_charset (dp, strlen (dp)); |
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472 | } else { |
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473 | if (!(result = (strcasecmp (bp, "text") != 0))) { |
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474 | *dp = c; |
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475 | bp = dp; |
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476 | passno = 2; |
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477 | goto again; |
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478 | } |
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479 | } |
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480 | out: |
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481 | free (cp); |
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482 | if (result) { |
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483 | fclose (fp); |
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484 | return result; |
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485 | } |
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486 | break; |
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487 | } |
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488 | |
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489 | /* |
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490 | * Check Content-Transfer-Encoding field |
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491 | */ |
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492 | if (!strcasecmp (name, ENCODING_FIELD)) { |
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493 | cp = add (buf, NULL); |
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494 | while (state == FLDPLUS) { |
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495 | state = m_getfld (state, name, buf, sizeof(buf), fp); |
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496 | cp = add (buf, cp); |
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497 | } |
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498 | for (bp = cp; isspace (*bp); bp++) |
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499 | continue; |
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500 | for (dp = bp; istoken (*dp); dp++) |
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501 | continue; |
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502 | *dp = '\0'; |
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503 | result = (strcasecmp (bp, "7bit") |
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504 | && strcasecmp (bp, "8bit") |
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505 | && strcasecmp (bp, "binary")); |
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506 | |
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507 | free (cp); |
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508 | if (result) { |
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509 | fclose (fp); |
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510 | return result; |
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511 | } |
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512 | break; |
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513 | } |
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514 | |
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515 | /* |
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516 | * Just skip the rest of this header |
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517 | * field and go to next one. |
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518 | */ |
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519 | while (state == FLDPLUS) |
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520 | state = m_getfld (state, name, buf, sizeof(buf), fp); |
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521 | break; |
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522 | |
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523 | /* |
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524 | * We've passed the message header, |
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525 | * so message is just text. |
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526 | */ |
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527 | default: |
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528 | fclose (fp); |
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529 | return 0; |
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530 | } |
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531 | } |
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532 | } |
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