1 | /** \ingroup rpmio |
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2 | * \file rpmio/url.c |
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3 | */ |
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4 | |
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5 | #include "system.h" |
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6 | |
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7 | #include <netinet/in.h> |
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8 | |
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9 | #include <rpmmacro.h> |
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10 | #include <rpmmessages.h> |
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11 | #include <rpmio_internal.h> |
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12 | |
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13 | #include "debug.h" |
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14 | |
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15 | /*@access FD_t@*/ /* XXX compared with NULL */ |
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16 | /*@access urlinfo@*/ |
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17 | |
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18 | #ifndef IPPORT_FTP |
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19 | #define IPPORT_FTP 21 |
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20 | #endif |
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21 | #ifndef IPPORT_HTTP |
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22 | #define IPPORT_HTTP 80 |
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23 | #endif |
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24 | |
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25 | /** |
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26 | */ |
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27 | /*@unchecked@*/ |
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28 | int _url_iobuf_size = RPMURL_IOBUF_SIZE; |
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29 | |
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30 | /** |
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31 | */ |
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32 | /*@unchecked@*/ |
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33 | int _url_debug = 0; |
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34 | |
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35 | #define URLDBG(_f, _m, _x) if ((_url_debug | (_f)) & (_m)) fprintf _x |
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36 | |
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37 | #define URLDBGIO(_f, _x) URLDBG((_f), RPMURL_DEBUG_IO, _x) |
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38 | #define URLDBGREFS(_f, _x) URLDBG((_f), RPMURL_DEBUG_REFS, _x) |
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39 | |
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40 | /** |
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41 | */ |
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42 | /*@-incondefs@*/ |
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43 | /*@unchecked@*/ |
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44 | /*@only@*/ /*@null@*/ |
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45 | urlinfo *_url_cache = NULL; |
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46 | /*@=incondefs@*/ |
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47 | |
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48 | /** |
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49 | */ |
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50 | /*@-incondefs@*/ |
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51 | /*@unchecked@*/ |
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52 | int _url_count = 0; |
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53 | /*@=incondefs@*/ |
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54 | |
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55 | /** |
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56 | * Wrapper to free(3), hides const compilation noise, permit NULL, return NULL. |
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57 | * @param p memory to free |
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58 | * @retval NULL always |
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59 | */ |
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60 | /*@unused@*/ static inline /*@null@*/ void * |
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61 | _free(/*@only@*/ /*@null@*/ const void * p) /*@modifies p@*/ |
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62 | { |
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63 | if (p != NULL) free((void *)p); |
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64 | return NULL; |
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65 | } |
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66 | |
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67 | urlinfo XurlLink(urlinfo u, const char *msg, const char *file, unsigned line) |
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68 | { |
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69 | URLSANE(u); |
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70 | u->nrefs++; |
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71 | /*@-modfilesys@*/ |
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72 | URLDBGREFS(0, (stderr, "--> url %p ++ %d %s at %s:%u\n", u, u->nrefs, msg, file, line)); |
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73 | /*@=modfilesys@*/ |
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74 | /*@-refcounttrans@*/ return u; /*@=refcounttrans@*/ |
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75 | } |
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76 | |
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77 | urlinfo XurlNew(const char *msg, const char *file, unsigned line) |
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78 | { |
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79 | urlinfo u; |
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80 | if ((u = xmalloc(sizeof(*u))) == NULL) |
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81 | return NULL; |
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82 | memset(u, 0, sizeof(*u)); |
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83 | u->proxyp = -1; |
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84 | u->port = -1; |
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85 | u->urltype = URL_IS_UNKNOWN; |
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86 | u->ctrl = NULL; |
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87 | u->data = NULL; |
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88 | u->bufAlloced = 0; |
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89 | u->buf = NULL; |
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90 | u->httpHasRange = 1; |
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91 | u->httpVersion = 0; |
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92 | u->nrefs = 0; |
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93 | u->magic = URLMAGIC; |
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94 | return XurlLink(u, msg, file, line); |
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95 | } |
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96 | |
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97 | urlinfo XurlFree(urlinfo u, const char *msg, const char *file, unsigned line) |
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98 | { |
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99 | int xx; |
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100 | |
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101 | URLSANE(u); |
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102 | URLDBGREFS(0, (stderr, "--> url %p -- %d %s at %s:%u\n", u, u->nrefs, msg, file, line)); |
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103 | if (--u->nrefs > 0) |
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104 | /*@-refcounttrans -retalias@*/ return u; /*@=refcounttrans =retalias@*/ |
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105 | if (u->ctrl) { |
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106 | #ifndef NOTYET |
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107 | void * fp = fdGetFp(u->ctrl); |
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108 | /*@-branchstate@*/ |
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109 | if (fp) { |
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110 | fdPush(u->ctrl, fpio, fp, -1); /* Push fpio onto stack */ |
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111 | (void) Fclose(u->ctrl); |
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112 | } else if (fdio->_fileno(u->ctrl) >= 0) |
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113 | xx = fdio->close(u->ctrl); |
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114 | /*@=branchstate@*/ |
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115 | #else |
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116 | (void) Fclose(u->ctrl); |
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117 | #endif |
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118 | |
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119 | u->ctrl = fdio->_fdderef(u->ctrl, "persist ctrl (urlFree)", file, line); |
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120 | /*@-usereleased@*/ |
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121 | if (u->ctrl) |
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122 | fprintf(stderr, _("warning: u %p ctrl %p nrefs != 0 (%s %s)\n"), |
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123 | u, u->ctrl, (u->host ? u->host : ""), |
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124 | (u->service ? u->service : "")); |
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125 | /*@=usereleased@*/ |
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126 | } |
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127 | if (u->data) { |
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128 | #ifndef NOTYET |
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129 | void * fp = fdGetFp(u->data); |
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130 | if (fp) { |
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131 | fdPush(u->data, fpio, fp, -1); /* Push fpio onto stack */ |
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132 | (void) Fclose(u->data); |
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133 | } else if (fdio->_fileno(u->data) >= 0) |
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134 | xx = fdio->close(u->data); |
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135 | #else |
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136 | (void) Fclose(u->ctrl); |
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137 | #endif |
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138 | |
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139 | u->data = fdio->_fdderef(u->data, "persist data (urlFree)", file, line); |
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140 | /*@-usereleased@*/ |
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141 | if (u->data) |
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142 | fprintf(stderr, _("warning: u %p data %p nrefs != 0 (%s %s)\n"), |
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143 | u, u->data, (u->host ? u->host : ""), |
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144 | (u->service ? u->service : "")); |
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145 | /*@=usereleased@*/ |
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146 | } |
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147 | u->buf = _free(u->buf); |
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148 | u->url = _free(u->url); |
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149 | u->service = _free((void *)u->service); |
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150 | u->user = _free((void *)u->user); |
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151 | u->password = _free((void *)u->password); |
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152 | u->host = _free((void *)u->host); |
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153 | u->portstr = _free((void *)u->portstr); |
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154 | u->proxyu = _free((void *)u->proxyu); |
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155 | u->proxyh = _free((void *)u->proxyh); |
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156 | |
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157 | /*@-refcounttrans@*/ u = _free(u); /*@-refcounttrans@*/ |
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158 | return NULL; |
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159 | } |
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160 | |
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161 | /*@-boundswrite@*/ |
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162 | void urlFreeCache(void) |
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163 | { |
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164 | if (_url_cache) { |
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165 | int i; |
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166 | for (i = 0; i < _url_count; i++) { |
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167 | if (_url_cache[i] == NULL) continue; |
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168 | _url_cache[i] = urlFree(_url_cache[i], "_url_cache"); |
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169 | if (_url_cache[i]) |
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170 | fprintf(stderr, |
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171 | _("warning: _url_cache[%d] %p nrefs(%d) != 1 (%s %s)\n"), |
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172 | i, _url_cache[i], _url_cache[i]->nrefs, |
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173 | (_url_cache[i]->host ? _url_cache[i]->host : ""), |
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174 | (_url_cache[i]->service ? _url_cache[i]->service : "")); |
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175 | } |
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176 | } |
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177 | _url_cache = _free(_url_cache); |
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178 | _url_count = 0; |
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179 | } |
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180 | /*@=boundswrite@*/ |
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181 | |
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182 | static int urlStrcmp(/*@null@*/ const char * str1, /*@null@*/ const char * str2) |
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183 | /*@*/ |
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184 | { |
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185 | if (str1) |
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186 | if (str2) |
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187 | return strcmp(str1, str2); |
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188 | if (str1 != str2) |
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189 | return -1; |
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190 | return 0; |
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191 | } |
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192 | |
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193 | /*@-boundswrite@*/ |
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194 | /*@-mods@*/ |
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195 | static void urlFind(/*@null@*/ /*@in@*/ /*@out@*/ urlinfo * uret, int mustAsk) |
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196 | /*@globals rpmGlobalMacroContext, fileSystem, internalState @*/ |
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197 | /*@modifies *uret, rpmGlobalMacroContext, fileSystem, internalState @*/ |
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198 | { |
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199 | urlinfo u; |
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200 | int ucx; |
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201 | int i = 0; |
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202 | |
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203 | if (uret == NULL) |
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204 | return; |
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205 | |
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206 | u = *uret; |
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207 | URLSANE(u); |
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208 | |
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209 | ucx = -1; |
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210 | for (i = 0; i < _url_count; i++) { |
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211 | urlinfo ou = NULL; |
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212 | if (_url_cache == NULL || (ou = _url_cache[i]) == NULL) { |
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213 | if (ucx < 0) |
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214 | ucx = i; |
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215 | continue; |
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216 | } |
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217 | |
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218 | /* Check for cache-miss condition. A cache miss is |
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219 | * a) both items are not NULL and don't compare. |
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220 | * b) either of the items is not NULL. |
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221 | */ |
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222 | if (urlStrcmp(u->service, ou->service)) |
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223 | continue; |
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224 | if (urlStrcmp(u->host, ou->host)) |
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225 | continue; |
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226 | if (urlStrcmp(u->user, ou->user)) |
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227 | continue; |
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228 | if (urlStrcmp(u->portstr, ou->portstr)) |
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229 | continue; |
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230 | break; /* Found item in cache */ |
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231 | } |
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232 | |
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233 | if (i == _url_count) { |
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234 | if (ucx < 0) { |
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235 | ucx = _url_count++; |
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236 | _url_cache = xrealloc(_url_cache, sizeof(*_url_cache) * _url_count); |
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237 | } |
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238 | if (_url_cache) /* XXX always true */ |
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239 | _url_cache[ucx] = urlLink(u, "_url_cache (miss)"); |
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240 | u = urlFree(u, "urlSplit (urlFind miss)"); |
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241 | } else { |
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242 | ucx = i; |
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243 | u = urlFree(u, "urlSplit (urlFind hit)"); |
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244 | } |
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245 | |
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246 | /* This URL is now cached. */ |
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247 | |
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248 | if (_url_cache) /* XXX always true */ |
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249 | u = urlLink(_url_cache[ucx], "_url_cache"); |
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250 | *uret = u; |
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251 | /*@-usereleased@*/ |
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252 | u = urlFree(u, "_url_cache (urlFind)"); |
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253 | /*@=usereleased@*/ |
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254 | |
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255 | /* Zap proxy host and port in case they have been reset */ |
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256 | u->proxyp = -1; |
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257 | u->proxyh = _free(u->proxyh); |
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258 | |
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259 | /* Perform one-time FTP initialization */ |
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260 | if (u->urltype == URL_IS_FTP) { |
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261 | |
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262 | if (mustAsk || (u->user != NULL && u->password == NULL)) { |
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263 | const char * host = (u->host ? u->host : ""); |
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264 | const char * user = (u->user ? u->user : ""); |
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265 | char * prompt; |
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266 | prompt = alloca(strlen(host) + strlen(user) + 256); |
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267 | sprintf(prompt, _("Password for %s@%s: "), user, host); |
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268 | u->password = _free(u->password); |
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269 | /*@-dependenttrans -moduncon @*/ |
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270 | u->password = /*@-unrecog@*/ getpass(prompt) /*@=unrecog@*/; |
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271 | /*@=dependenttrans =moduncon @*/ |
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272 | if (u->password) |
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273 | u->password = xstrdup(u->password); |
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274 | } |
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275 | |
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276 | if (u->proxyh == NULL) { |
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277 | const char *proxy = rpmExpand("%{_ftpproxy}", NULL); |
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278 | if (proxy && *proxy != '%') { |
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279 | /*@observer@*/ const char * host = (u->host ? u->host : ""); |
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280 | const char *uu = (u->user ? u->user : "anonymous"); |
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281 | char *nu = xmalloc(strlen(uu) + sizeof("@") + strlen(host)); |
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282 | (void) stpcpy( stpcpy( stpcpy(nu, uu), "@"), host); |
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283 | u->proxyu = nu; |
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284 | u->proxyh = xstrdup(proxy); |
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285 | } |
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286 | proxy = _free(proxy); |
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287 | } |
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288 | |
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289 | if (u->proxyp < 0) { |
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290 | const char *proxy = rpmExpand("%{_ftpport}", NULL); |
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291 | if (proxy && *proxy != '%') { |
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292 | char *end; |
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293 | int port = strtol(proxy, &end, 0); |
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294 | if (!(end && *end == '\0')) { |
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295 | fprintf(stderr, _("error: %sport must be a number\n"), |
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296 | (u->service ? u->service : "")); |
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297 | return; |
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298 | } |
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299 | u->proxyp = port; |
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300 | } |
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301 | proxy = _free(proxy); |
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302 | } |
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303 | } |
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304 | |
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305 | /* Perform one-time HTTP initialization */ |
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306 | if (u->urltype == URL_IS_HTTP) { |
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307 | |
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308 | if (u->proxyh == NULL) { |
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309 | const char *proxy = rpmExpand("%{_httpproxy}", NULL); |
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310 | if (proxy && *proxy != '%') |
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311 | u->proxyh = xstrdup(proxy); |
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312 | proxy = _free(proxy); |
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313 | } |
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314 | |
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315 | if (u->proxyp < 0) { |
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316 | const char *proxy = rpmExpand("%{_httpport}", NULL); |
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317 | if (proxy && *proxy != '%') { |
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318 | char *end; |
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319 | int port = strtol(proxy, &end, 0); |
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320 | if (!(end && *end == '\0')) { |
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321 | fprintf(stderr, _("error: %sport must be a number\n"), |
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322 | (u->service ? u->service : "")); |
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323 | return; |
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324 | } |
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325 | u->proxyp = port; |
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326 | } |
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327 | proxy = _free(proxy); |
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328 | } |
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329 | |
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330 | } |
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331 | |
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332 | return; |
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333 | } |
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334 | /*@=mods@*/ |
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335 | /*@=boundswrite@*/ |
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336 | |
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337 | /** |
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338 | */ |
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339 | /*@observer@*/ /*@unchecked@*/ |
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340 | static struct urlstring { |
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341 | /*@observer@*/ /*@null@*/ |
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342 | const char * leadin; |
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343 | urltype ret; |
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344 | } urlstrings[] = { |
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345 | { "file://", URL_IS_PATH }, |
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346 | { "ftp://", URL_IS_FTP }, |
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347 | { "http://", URL_IS_HTTP }, |
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348 | { "-", URL_IS_DASH }, |
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349 | { NULL, URL_IS_UNKNOWN } |
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350 | }; |
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351 | |
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352 | urltype urlIsURL(const char * url) |
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353 | { |
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354 | struct urlstring *us; |
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355 | |
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356 | /*@-boundsread@*/ |
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357 | if (url && *url) { |
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358 | for (us = urlstrings; us->leadin != NULL; us++) { |
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359 | if (strncmp(url, us->leadin, strlen(us->leadin))) |
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360 | continue; |
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361 | return us->ret; |
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362 | } |
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363 | } |
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364 | /*@=boundsread@*/ |
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365 | |
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366 | return URL_IS_UNKNOWN; |
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367 | } |
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368 | |
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369 | /*@-boundswrite@*/ |
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370 | /* Return path portion of url (or pointer to NUL if url == NULL) */ |
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371 | urltype urlPath(const char * url, const char ** pathp) |
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372 | { |
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373 | const char *path; |
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374 | int urltype; |
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375 | |
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376 | path = url; |
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377 | urltype = urlIsURL(url); |
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378 | /*@-branchstate@*/ |
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379 | switch (urltype) { |
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380 | case URL_IS_FTP: |
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381 | url += sizeof("ftp://") - 1; |
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382 | path = strchr(url, '/'); |
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383 | if (path == NULL) path = url + strlen(url); |
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384 | break; |
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385 | case URL_IS_HTTP: |
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386 | case URL_IS_PATH: |
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387 | url += sizeof("file://") - 1; |
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388 | path = strchr(url, '/'); |
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389 | if (path == NULL) path = url + strlen(url); |
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390 | break; |
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391 | case URL_IS_UNKNOWN: |
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392 | if (path == NULL) path = ""; |
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393 | break; |
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394 | case URL_IS_DASH: |
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395 | path = ""; |
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396 | break; |
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397 | } |
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398 | /*@=branchstate@*/ |
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399 | if (pathp) |
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400 | /*@-observertrans@*/ |
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401 | *pathp = path; |
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402 | /*@=observertrans@*/ |
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403 | return urltype; |
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404 | } |
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405 | /*@=boundswrite@*/ |
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406 | |
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407 | /* |
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408 | * Split URL into components. The URL can look like |
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409 | * service://user:password@host:port/path |
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410 | */ |
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411 | /*@-bounds@*/ |
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412 | /*@-modfilesys@*/ |
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413 | int urlSplit(const char * url, urlinfo *uret) |
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414 | { |
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415 | urlinfo u; |
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416 | char *myurl; |
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417 | char *s, *se, *f, *fe; |
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418 | |
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419 | if (uret == NULL) |
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420 | return -1; |
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421 | if ((u = urlNew("urlSplit")) == NULL) |
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422 | return -1; |
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423 | |
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424 | if ((se = s = myurl = xstrdup(url)) == NULL) { |
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425 | u = urlFree(u, "urlSplit (error #1)"); |
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426 | return -1; |
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427 | } |
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428 | |
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429 | u->url = xstrdup(url); |
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430 | u->urltype = urlIsURL(url); |
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431 | |
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432 | while (1) { |
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433 | /* Point to end of next item */ |
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434 | while (*se && *se != '/') se++; |
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435 | /* Item was service. Save service and go for the rest ...*/ |
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436 | if (*se && (se != s) && se[-1] == ':' && se[0] == '/' && se[1] == '/') { |
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437 | se[-1] = '\0'; |
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438 | u->service = xstrdup(s); |
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439 | se += 2; /* skip over "//" */ |
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440 | s = se++; |
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441 | continue; |
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442 | } |
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443 | |
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444 | /* Item was everything-but-path. Continue parse on rest */ |
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445 | *se = '\0'; |
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446 | break; |
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447 | } |
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448 | |
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449 | /* Look for ...@host... */ |
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450 | fe = f = s; |
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451 | while (*fe && *fe != '@') fe++; |
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452 | /*@-branchstate@*/ |
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453 | if (*fe == '@') { |
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454 | s = fe + 1; |
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455 | *fe = '\0'; |
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456 | /* Look for user:password@host... */ |
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457 | while (fe > f && *fe != ':') fe--; |
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458 | if (*fe == ':') { |
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459 | *fe++ = '\0'; |
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460 | u->password = xstrdup(fe); |
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461 | } |
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462 | u->user = xstrdup(f); |
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463 | } |
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464 | /*@=branchstate@*/ |
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465 | |
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466 | /* Look for ...host:port */ |
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467 | fe = f = s; |
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468 | while (*fe && *fe != ':') fe++; |
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469 | if (*fe == ':') { |
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470 | *fe++ = '\0'; |
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471 | u->portstr = xstrdup(fe); |
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472 | if (u->portstr != NULL && u->portstr[0] != '\0') { |
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473 | char *end; |
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474 | u->port = strtol(u->portstr, &end, 0); |
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475 | if (!(end && *end == '\0')) { |
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476 | rpmMessage(RPMMESS_ERROR, _("url port must be a number\n")); |
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477 | myurl = _free(myurl); |
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478 | u = urlFree(u, "urlSplit (error #3)"); |
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479 | return -1; |
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480 | } |
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481 | } |
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482 | } |
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483 | u->host = xstrdup(f); |
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484 | |
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485 | if (u->port < 0 && u->service != NULL) { |
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486 | struct servent *serv; |
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487 | /*@-multithreaded -moduncon @*/ |
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488 | serv = getservbyname(u->service, "tcp"); |
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489 | /*@=multithreaded =moduncon @*/ |
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490 | if (serv != NULL) |
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491 | u->port = ntohs(serv->s_port); |
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492 | else if (u->urltype == URL_IS_FTP) |
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493 | u->port = IPPORT_FTP; |
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494 | else if (u->urltype == URL_IS_HTTP) |
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495 | u->port = IPPORT_HTTP; |
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496 | } |
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497 | |
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498 | myurl = _free(myurl); |
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499 | if (uret) { |
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500 | *uret = u; |
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501 | /*@-globs -mods @*/ /* FIX: rpmGlobalMacroContext not in <rpmlib.h> */ |
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502 | urlFind(uret, 0); |
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503 | /*@=globs =mods @*/ |
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504 | } |
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505 | return 0; |
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506 | } |
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507 | /*@=modfilesys@*/ |
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508 | /*@=bounds@*/ |
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509 | |
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510 | int urlGetFile(const char * url, const char * dest) |
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511 | { |
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512 | int rc; |
---|
513 | FD_t sfd = NULL; |
---|
514 | FD_t tfd = NULL; |
---|
515 | const char * sfuPath = NULL; |
---|
516 | int urlType = urlPath(url, &sfuPath); |
---|
517 | |
---|
518 | if (*sfuPath == '\0') |
---|
519 | return FTPERR_UNKNOWN; |
---|
520 | |
---|
521 | sfd = Fopen(url, "r.ufdio"); |
---|
522 | if (sfd == NULL || Ferror(sfd)) { |
---|
523 | rpmMessage(RPMMESS_DEBUG, _("failed to open %s: %s\n"), url, Fstrerror(sfd)); |
---|
524 | rc = FTPERR_UNKNOWN; |
---|
525 | goto exit; |
---|
526 | } |
---|
527 | |
---|
528 | if (dest == NULL) { |
---|
529 | if ((dest = strrchr(sfuPath, '/')) != NULL) |
---|
530 | dest++; |
---|
531 | else |
---|
532 | dest = sfuPath; |
---|
533 | } |
---|
534 | |
---|
535 | if (dest == NULL) |
---|
536 | return FTPERR_UNKNOWN; |
---|
537 | |
---|
538 | tfd = Fopen(dest, "w.ufdio"); |
---|
539 | if (_url_debug) |
---|
540 | fprintf(stderr, "*** urlGetFile sfd %p %s tfd %p %s\n", sfd, url, (tfd ? tfd : NULL), dest); |
---|
541 | if (tfd == NULL || Ferror(tfd)) { |
---|
542 | /* XXX Fstrerror */ |
---|
543 | rpmMessage(RPMMESS_DEBUG, _("failed to create %s: %s\n"), dest, Fstrerror(tfd)); |
---|
544 | rc = FTPERR_UNKNOWN; |
---|
545 | goto exit; |
---|
546 | } |
---|
547 | |
---|
548 | switch (urlType) { |
---|
549 | case URL_IS_FTP: |
---|
550 | case URL_IS_HTTP: |
---|
551 | case URL_IS_PATH: |
---|
552 | case URL_IS_DASH: |
---|
553 | case URL_IS_UNKNOWN: |
---|
554 | if ((rc = ufdGetFile(sfd, tfd))) { |
---|
555 | (void) Unlink(dest); |
---|
556 | /* XXX FIXME: sfd possibly closed by copyData */ |
---|
557 | /*@-usereleased@*/ (void) Fclose(sfd) /*@=usereleased@*/ ; |
---|
558 | } |
---|
559 | sfd = NULL; /* XXX Fclose(sfd) done by ufdGetFile */ |
---|
560 | break; |
---|
561 | default: |
---|
562 | rc = FTPERR_UNKNOWN; |
---|
563 | break; |
---|
564 | } |
---|
565 | |
---|
566 | exit: |
---|
567 | if (tfd) |
---|
568 | (void) Fclose(tfd); |
---|
569 | if (sfd) |
---|
570 | (void) Fclose(sfd); |
---|
571 | |
---|
572 | return rc; |
---|
573 | } |
---|