| File: | out/../deps/openssl/openssl/crypto/http/http_lib.c |
| Warning: | line 79, column 23 Although the value stored to 'host' is used in the enclosing expression, the value is never actually read from 'host' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* |
| 2 | * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
| 5 | * this file except in compliance with the License. You can obtain a copy |
| 6 | * in the file LICENSE in the source distribution or at |
| 7 | * https://www.openssl.org/source/license.html |
| 8 | */ |
| 9 | |
| 10 | #include <stdio.h> /* for sscanf() */ |
| 11 | #include <string.h> |
| 12 | #include <openssl/http.h> |
| 13 | #include <openssl/httperr.h> |
| 14 | #include <openssl/bio.h> /* for BIO_snprintf() */ |
| 15 | #include <openssl/err.h> |
| 16 | #include "internal/cryptlib.h" /* for ossl_assert() */ |
| 17 | |
| 18 | static void init_pstring(char **pstr) |
| 19 | { |
| 20 | if (pstr != NULL((void*)0)) { |
| 21 | *pstr = NULL((void*)0); |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | static int copy_substring(char **dest, const char *start, const char *end) |
| 26 | { |
| 27 | return dest == NULL((void*)0) |
| 28 | || (*dest = OPENSSL_strndup(start, end - start)CRYPTO_strndup(start, end - start, "../deps/openssl/openssl/crypto/http/http_lib.c" , 28)) != NULL((void*)0); |
| 29 | } |
| 30 | |
| 31 | static void free_pstring(char **pstr) |
| 32 | { |
| 33 | if (pstr != NULL((void*)0)) { |
| 34 | OPENSSL_free(*pstr)CRYPTO_free(*pstr, "../deps/openssl/openssl/crypto/http/http_lib.c" , 34); |
| 35 | *pstr = NULL((void*)0); |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | int OSSL_parse_url(const char *url, char **pscheme, char **puser, char **phost, |
| 40 | char **pport, int *pport_num, |
| 41 | char **ppath, char **pquery, char **pfrag) |
| 42 | { |
| 43 | const char *p, *tmp; |
| 44 | const char *scheme, *scheme_end; |
| 45 | const char *user, *user_end; |
| 46 | const char *host, *host_end; |
| 47 | const char *port, *port_end; |
| 48 | unsigned int portnum; |
| 49 | const char *path, *path_end; |
| 50 | const char *query, *query_end; |
| 51 | const char *frag, *frag_end; |
| 52 | |
| 53 | init_pstring(pscheme); |
| 54 | init_pstring(puser); |
| 55 | init_pstring(phost); |
| 56 | init_pstring(pport); |
| 57 | init_pstring(ppath); |
| 58 | init_pstring(pfrag); |
| 59 | init_pstring(pquery); |
| 60 | |
| 61 | if (url == NULL((void*)0)) { |
| 62 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/http/http_lib.c" ,62,__func__), ERR_set_error)((61),((258|((0x1 << 18L)| (0x2 << 18L)))),((void*)0)); |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | /* check for optional prefix "<scheme>://" */ |
| 67 | scheme = scheme_end = url; |
| 68 | p = strstr(url, "://"); |
| 69 | if (p == NULL((void*)0)) { |
| 70 | p = url; |
| 71 | } else { |
| 72 | scheme_end = p; |
| 73 | if (scheme_end == scheme) |
| 74 | goto parse_err; |
| 75 | p += strlen("://"); |
| 76 | } |
| 77 | |
| 78 | /* parse optional "userinfo@" */ |
| 79 | user = user_end = host = p; |
Although the value stored to 'host' is used in the enclosing expression, the value is never actually read from 'host' | |
| 80 | host = strchr(p, '@'); |
| 81 | if (host != NULL((void*)0)) |
| 82 | user_end = host++; |
| 83 | else |
| 84 | host = p; |
| 85 | |
| 86 | /* parse host name/address as far as needed here */ |
| 87 | if (host[0] == '[') { |
| 88 | /* ipv6 literal, which may include ':' */ |
| 89 | host_end = strchr(host + 1, ']'); |
| 90 | if (host_end == NULL((void*)0)) |
| 91 | goto parse_err; |
| 92 | p = ++host_end; |
| 93 | } else { |
| 94 | /* look for start of optional port, path, query, or fragment */ |
| 95 | host_end = strchr(host, ':'); |
| 96 | if (host_end == NULL((void*)0)) |
| 97 | host_end = strchr(host, '/'); |
| 98 | if (host_end == NULL((void*)0)) |
| 99 | host_end = strchr(host, '?'); |
| 100 | if (host_end == NULL((void*)0)) |
| 101 | host_end = strchr(host, '#'); |
| 102 | if (host_end == NULL((void*)0)) /* the remaining string is just the hostname */ |
| 103 | host_end = host + strlen(host); |
| 104 | p = host_end; |
| 105 | } |
| 106 | |
| 107 | /* parse optional port specification starting with ':' */ |
| 108 | port = "0"; /* default */ |
| 109 | if (*p == ':') |
| 110 | port = ++p; |
| 111 | /* remaining port spec handling is also done for the default values */ |
| 112 | /* make sure a decimal port number is given */ |
| 113 | if (!sscanf(port, "%u", &portnum) || portnum > 65535) { |
| 114 | ERR_raise_data(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/http/http_lib.c" ,114,__func__), ERR_set_error)(ERR_LIB_HTTP61, HTTP_R_INVALID_PORT_NUMBER123, "%s", port); |
| 115 | goto err; |
| 116 | } |
| 117 | for (port_end = port; '0' <= *port_end && *port_end <= '9'; port_end++) |
| 118 | ; |
| 119 | if (port == p) /* port was given explicitly */ |
| 120 | p += port_end - port; |
| 121 | |
| 122 | /* check for optional path starting with '/' or '?'. Else must start '#' */ |
| 123 | path = p; |
| 124 | if (*path != '\0' && *path != '/' && *path != '?' && *path != '#') { |
| 125 | ERR_raise(ERR_LIB_HTTP, HTTP_R_INVALID_URL_PATH)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/http/http_lib.c" ,125,__func__), ERR_set_error)((61),(125),((void*)0)); |
| 126 | goto parse_err; |
| 127 | } |
| 128 | path_end = query = query_end = frag = frag_end = path + strlen(path); |
| 129 | |
| 130 | /* parse optional "?query" */ |
| 131 | tmp = strchr(p, '?'); |
| 132 | if (tmp != NULL((void*)0)) { |
| 133 | p = tmp; |
| 134 | if (pquery != NULL((void*)0)) { |
| 135 | path_end = p; |
| 136 | query = p + 1; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /* parse optional "#fragment" */ |
| 141 | tmp = strchr(p, '#'); |
| 142 | if (tmp != NULL((void*)0)) { |
| 143 | if (query == path_end) /* we did not record a query component */ |
| 144 | path_end = tmp; |
| 145 | query_end = tmp; |
| 146 | frag = tmp + 1; |
| 147 | } |
| 148 | |
| 149 | if (!copy_substring(pscheme, scheme, scheme_end) |
| 150 | || !copy_substring(phost, host, host_end) |
| 151 | || !copy_substring(pport, port, port_end) |
| 152 | || !copy_substring(puser, user, user_end) |
| 153 | || !copy_substring(pquery, query, query_end) |
| 154 | || !copy_substring(pfrag, frag, frag_end)) |
| 155 | goto err; |
| 156 | if (pport_num != NULL((void*)0)) |
| 157 | *pport_num = (int)portnum; |
| 158 | if (*path == '/') { |
| 159 | if (!copy_substring(ppath, path, path_end)) |
| 160 | goto err; |
| 161 | } else if (ppath != NULL((void*)0)) { /* must prepend '/' */ |
| 162 | size_t buflen = 1 + path_end - path + 1; |
| 163 | |
| 164 | if ((*ppath = OPENSSL_malloc(buflen)CRYPTO_malloc(buflen, "../deps/openssl/openssl/crypto/http/http_lib.c" , 164)) == NULL((void*)0)) |
| 165 | goto err; |
| 166 | BIO_snprintf(*ppath, buflen, "/%s", path); |
| 167 | } |
| 168 | return 1; |
| 169 | |
| 170 | parse_err: |
| 171 | ERR_raise(ERR_LIB_HTTP, HTTP_R_ERROR_PARSING_URL)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/http/http_lib.c" ,171,__func__), ERR_set_error)((61),(101),((void*)0)); |
| 172 | |
| 173 | err: |
| 174 | free_pstring(pscheme); |
| 175 | free_pstring(puser); |
| 176 | free_pstring(phost); |
| 177 | free_pstring(pport); |
| 178 | free_pstring(ppath); |
| 179 | free_pstring(pquery); |
| 180 | free_pstring(pfrag); |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | int OSSL_HTTP_parse_url(const char *url, int *pssl, char **puser, char **phost, |
| 185 | char **pport, int *pport_num, |
| 186 | char **ppath, char **pquery, char **pfrag) |
| 187 | { |
| 188 | char *scheme, *port; |
| 189 | int ssl = 0, portnum; |
| 190 | |
| 191 | init_pstring(pport); |
| 192 | if (pssl != NULL((void*)0)) |
| 193 | *pssl = 0; |
| 194 | if (!OSSL_parse_url(url, &scheme, puser, phost, &port, pport_num, |
| 195 | ppath, pquery, pfrag)) |
| 196 | return 0; |
| 197 | |
| 198 | /* check for optional HTTP scheme "http[s]" */ |
| 199 | if (strcmp(scheme, OSSL_HTTPS_NAME"https") == 0) { |
| 200 | ssl = 1; |
| 201 | if (pssl != NULL((void*)0)) |
| 202 | *pssl = ssl; |
| 203 | } else if (*scheme != '\0' && strcmp(scheme, OSSL_HTTP_NAME"http") != 0) { |
| 204 | ERR_raise(ERR_LIB_HTTP, HTTP_R_INVALID_URL_SCHEME)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/http/http_lib.c" ,204,__func__), ERR_set_error)((61),(124),((void*)0)); |
| 205 | OPENSSL_free(scheme)CRYPTO_free(scheme, "../deps/openssl/openssl/crypto/http/http_lib.c" , 205); |
| 206 | OPENSSL_free(port)CRYPTO_free(port, "../deps/openssl/openssl/crypto/http/http_lib.c" , 206); |
| 207 | goto err; |
| 208 | } |
| 209 | OPENSSL_free(scheme)CRYPTO_free(scheme, "../deps/openssl/openssl/crypto/http/http_lib.c" , 209); |
| 210 | |
| 211 | if (strcmp(port, "0") == 0) { |
| 212 | /* set default port */ |
| 213 | OPENSSL_free(port)CRYPTO_free(port, "../deps/openssl/openssl/crypto/http/http_lib.c" , 213); |
| 214 | port = ssl ? OSSL_HTTPS_PORT"443" : OSSL_HTTP_PORT"80"; |
| 215 | if (!ossl_assert(sscanf(port, "%d", &portnum) == 1)((sscanf(port, "%d", &portnum) == 1) != 0)) |
| 216 | goto err; |
| 217 | if (pport_num != NULL((void*)0)) |
| 218 | *pport_num = portnum; |
| 219 | if (pport != NULL((void*)0)) { |
| 220 | *pport = OPENSSL_strdup(port)CRYPTO_strdup(port, "../deps/openssl/openssl/crypto/http/http_lib.c" , 220); |
| 221 | if (*pport == NULL((void*)0)) |
| 222 | goto err; |
| 223 | } |
| 224 | } else { |
| 225 | if (pport != NULL((void*)0)) |
| 226 | *pport = port; |
| 227 | else |
| 228 | OPENSSL_free(port)CRYPTO_free(port, "../deps/openssl/openssl/crypto/http/http_lib.c" , 228); |
| 229 | } |
| 230 | return 1; |
| 231 | |
| 232 | err: |
| 233 | free_pstring(puser); |
| 234 | free_pstring(phost); |
| 235 | free_pstring(ppath); |
| 236 | free_pstring(pquery); |
| 237 | free_pstring(pfrag); |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /* Respect no_proxy, taking default value from environment variable(s) */ |
| 242 | static int use_proxy(const char *no_proxy, const char *server) |
| 243 | { |
| 244 | size_t sl; |
| 245 | const char *found = NULL((void*)0); |
| 246 | |
| 247 | if (!ossl_assert(server != NULL)((server != ((void*)0)) != 0)) |
| 248 | return 0; |
| 249 | sl = strlen(server); |
| 250 | |
| 251 | /* |
| 252 | * using environment variable names, both lowercase and uppercase variants, |
| 253 | * compatible with other HTTP client implementations like wget, curl and git |
| 254 | */ |
| 255 | if (no_proxy == NULL((void*)0)) |
| 256 | no_proxy = getenv("no_proxy"); |
| 257 | if (no_proxy == NULL((void*)0)) |
| 258 | no_proxy = getenv(OPENSSL_NO_PROXY"NO_PROXY"); |
| 259 | |
| 260 | if (no_proxy != NULL((void*)0)) |
| 261 | found = strstr(no_proxy, server); |
| 262 | while (found != NULL((void*)0) |
| 263 | && ((found != no_proxy && found[-1] != ' ' && found[-1] != ',') |
| 264 | || (found[sl] != '\0' && found[sl] != ' ' && found[sl] != ','))) |
| 265 | found = strstr(found + 1, server); |
| 266 | return found == NULL((void*)0); |
| 267 | } |
| 268 | |
| 269 | /* Take default value from environment variable(s), respect no_proxy */ |
| 270 | const char *OSSL_HTTP_adapt_proxy(const char *proxy, const char *no_proxy, |
| 271 | const char *server, int use_ssl) |
| 272 | { |
| 273 | /* |
| 274 | * using environment variable names, both lowercase and uppercase variants, |
| 275 | * compatible with other HTTP client implementations like wget, curl and git |
| 276 | */ |
| 277 | if (proxy == NULL((void*)0)) |
| 278 | proxy = getenv(use_ssl ? "https_proxy" : "http_proxy"); |
| 279 | if (proxy == NULL((void*)0)) |
| 280 | proxy = getenv(use_ssl ? OPENSSL_HTTP_PROXY"HTTP_PROXY" : |
| 281 | OPENSSL_HTTPS_PROXY"HTTPS_PROXY"); |
| 282 | |
| 283 | if (proxy == NULL((void*)0) || *proxy == '\0' || !use_proxy(no_proxy, server)) |
| 284 | return NULL((void*)0); |
| 285 | return proxy; |
| 286 | } |