diff options
Diffstat (limited to 'Utilities/cmcurl/easy.c')
| -rw-r--r-- | Utilities/cmcurl/easy.c | 895 |
1 files changed, 895 insertions, 0 deletions
diff --git a/Utilities/cmcurl/easy.c b/Utilities/cmcurl/easy.c new file mode 100644 index 000000000..209d1c3e0 --- /dev/null +++ b/Utilities/cmcurl/easy.c @@ -0,0 +1,895 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + * $Id$ + ***************************************************************************/ + +#include "setup.h" + +/* -- WIN32 approved -- */ +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include <stdlib.h> +#include <ctype.h> +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#include <errno.h> + +#include "strequal.h" + +#ifdef WIN32 +#include <time.h> +#include <io.h> +#else +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#include <netinet/in.h> +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <netdb.h> +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#ifdef HAVE_NET_IF_H +#include <net/if.h> +#endif +#include <sys/ioctl.h> +#include <signal.h> + +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif + +#endif /* WIN32 ... */ + +#include "urldata.h" +#include <curl/curl.h> +#include "transfer.h" +#include "sslgen.h" +#include "url.h" +#include "getinfo.h" +#include "hostip.h" +#include "share.h" +#include "strdup.h" +#include "memory.h" +#include "progress.h" +#include "easyif.h" +#include "sendf.h" /* for failf function prototype */ +#include <ca-bundle.h> + +#define _MPRINTF_REPLACE /* use our functions only */ +#include <curl/mprintf.h> + +#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) +#include <iconv.h> +/* set default codesets for iconv */ +#ifndef CURL_ICONV_CODESET_OF_NETWORK +#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1" +#endif +#ifndef CURL_ICONV_CODESET_FOR_UTF8 +#define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8" +#endif +#define ICONV_ERROR (size_t)-1 +#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */ + +/* The last #include file should be: */ +#include "memdebug.h" + +#ifdef USE_WINSOCK +/* win32_cleanup() is for win32 socket cleanup functionality, the opposite + of win32_init() */ +static void win32_cleanup(void) +{ + WSACleanup(); +} + +/* win32_init() performs win32 socket initialization to properly setup the + stack to allow networking */ +static CURLcode win32_init(void) +{ + WORD wVersionRequested; + WSADATA wsaData; + int err; + +#if defined(ENABLE_IPV6) && (USE_WINSOCK < 2) + Error IPV6_requires_winsock2 +#endif + + wVersionRequested = MAKEWORD(USE_WINSOCK, USE_WINSOCK); + + err = WSAStartup(wVersionRequested, &wsaData); + + if (err != 0) + /* Tell the user that we couldn't find a useable */ + /* winsock.dll. */ + return CURLE_FAILED_INIT; + + /* Confirm that the Windows Sockets DLL supports what we need.*/ + /* Note that if the DLL supports versions greater */ + /* than wVersionRequested, it will still return */ + /* wVersionRequested in wVersion. wHighVersion contains the */ + /* highest supported version. */ + + if ( LOBYTE( wsaData.wVersion ) != LOBYTE(wVersionRequested) || + HIBYTE( wsaData.wVersion ) != HIBYTE(wVersionRequested) ) { + /* Tell the user that we couldn't find a useable */ + + /* winsock.dll. */ + WSACleanup(); + return CURLE_FAILED_INIT; + } + /* The Windows Sockets DLL is acceptable. Proceed. */ + return CURLE_OK; +} + +#else +/* These functions exist merely to prevent compiler warnings */ +static CURLcode win32_init(void) { return CURLE_OK; } +static void win32_cleanup(void) { } +#endif + +#ifdef USE_LIBIDN +/* + * Initialise use of IDNA library. + * It falls back to ASCII if $CHARSET isn't defined. This doesn't work for + * idna_to_ascii_lz(). + */ +static void idna_init (void) +{ +#ifdef WIN32 + char buf[60]; + UINT cp = GetACP(); + + if (!getenv("CHARSET") && cp > 0) { + snprintf(buf, sizeof(buf), "CHARSET=cp%u", cp); + putenv(buf); + } +#else + /* to do? */ +#endif +} +#endif /* USE_LIBIDN */ + +/* true globals -- for curl_global_init() and curl_global_cleanup() */ +static unsigned int initialized; +static long init_flags; + +/* + * strdup (and other memory functions) is redefined in complicated + * ways, but at this point it must be defined as the system-supplied strdup + * so the callback pointer is initialized correctly. + */ +#if defined(_WIN32_WCE) +#define system_strdup _strdup +#elif !defined(HAVE_STRDUP) +#define system_strdup curlx_strdup +#else +#define system_strdup strdup +#endif + +/* + * If a memory-using function (like curl_getenv) is used before + * curl_global_init() is called, we need to have these pointers set already. + */ + +curl_malloc_callback Curl_cmalloc = (curl_malloc_callback)malloc; +curl_free_callback Curl_cfree = (curl_free_callback)free; +curl_realloc_callback Curl_crealloc = (curl_realloc_callback)realloc; +curl_strdup_callback Curl_cstrdup = (curl_strdup_callback)system_strdup; +curl_calloc_callback Curl_ccalloc = (curl_calloc_callback)calloc; + +/** + * curl_global_init() globally initializes cURL given a bitwise set of the + * different features of what to initialize. + */ +CURLcode curl_global_init(long flags) +{ + if (initialized++) + return CURLE_OK; + + /* Setup the default memory functions here (again) */ + Curl_cmalloc = (curl_malloc_callback)malloc; + Curl_cfree = (curl_free_callback)free; + Curl_crealloc = (curl_realloc_callback)realloc; + Curl_cstrdup = (curl_strdup_callback)system_strdup; + Curl_ccalloc = (curl_calloc_callback)calloc; + + if (flags & CURL_GLOBAL_SSL) + if (!Curl_ssl_init()) + return CURLE_FAILED_INIT; + + if (flags & CURL_GLOBAL_WIN32) + if (win32_init() != CURLE_OK) + return CURLE_FAILED_INIT; + +#ifdef _AMIGASF + if(!amiga_init()) + return CURLE_FAILED_INIT; +#endif + +#ifdef USE_LIBIDN + idna_init(); +#endif + + init_flags = flags; + + return CURLE_OK; +} + +/* + * curl_global_init_mem() globally initializes cURL and also registers the + * user provided callback routines. + */ +CURLcode curl_global_init_mem(long flags, curl_malloc_callback m, + curl_free_callback f, curl_realloc_callback r, + curl_strdup_callback s, curl_calloc_callback c) +{ + CURLcode code = CURLE_OK; + + /* Invalid input, return immediately */ + if (!m || !f || !r || !s || !c) + return CURLE_FAILED_INIT; + + /* Already initialized, don't do it again */ + if ( initialized ) + return CURLE_OK; + + /* Call the actual init function first */ + code = curl_global_init(flags); + if (code == CURLE_OK) { + Curl_cmalloc = m; + Curl_cfree = f; + Curl_cstrdup = s; + Curl_crealloc = r; + Curl_ccalloc = c; + } + + return code; +} + +/** + * curl_global_cleanup() globally cleanups cURL, uses the value of + * "init_flags" to determine what needs to be cleaned up and what doesn't. + */ +void curl_global_cleanup(void) +{ + if (!initialized) + return; + + if (--initialized) + return; + + Curl_global_host_cache_dtor(); + + if (init_flags & CURL_GLOBAL_SSL) + Curl_ssl_cleanup(); + + if (init_flags & CURL_GLOBAL_WIN32) + win32_cleanup(); + +#ifdef _AMIGASF + amiga_cleanup(); +#endif + + init_flags = 0; +} + +/* + * curl_easy_init() is the external interface to alloc, setup and init an + * easy handle that is returned. If anything goes wrong, NULL is returned. + */ +CURL *curl_easy_init(void) +{ + CURLcode res; + struct SessionHandle *data; + + /* Make sure we inited the global SSL stuff */ + if (!initialized) { + res = curl_global_init(CURL_GLOBAL_DEFAULT); + if(res) + /* something in the global init failed, return nothing */ + return NULL; + } + + /* We use curl_open() with undefined URL so far */ + res = Curl_open(&data); + if(res != CURLE_OK) + return NULL; + + return data; +} + +/* + * curl_easy_setopt() is the external interface for setting options on an + * easy handle. + */ + +CURLcode curl_easy_setopt(CURL *curl, CURLoption tag, ...) +{ + va_list arg; + struct SessionHandle *data = curl; + CURLcode ret; + + if(!curl) + return CURLE_BAD_FUNCTION_ARGUMENT; + + va_start(arg, tag); + + ret = Curl_setopt(data, tag, arg); + + va_end(arg); + return ret; +} + +#ifdef CURL_MULTIEASY +/*************************************************************************** + * This function is still only for testing purposes. It makes a great way + * to run the full test suite on the multi interface instead of the easy one. + *************************************************************************** + * + * The *new* curl_easy_perform() is the external interface that performs a + * transfer previously setup. + * + * Wrapper-function that: creates a multi handle, adds the easy handle to it, + * runs curl_multi_perform() until the transfer is done, then detaches the + * easy handle, destroys the multi handle and returns the easy handle's return + * code. This will make everything internally use and assume multi interface. + */ +CURLcode curl_easy_perform(CURL *easy) +{ + CURLM *multi; + CURLMcode mcode; + CURLcode code = CURLE_OK; + int still_running; + struct timeval timeout; + int rc; + CURLMsg *msg; + fd_set fdread; + fd_set fdwrite; + fd_set fdexcep; + int maxfd; + + if(!easy) + return CURLE_BAD_FUNCTION_ARGUMENT; + + multi = curl_multi_init(); + if(!multi) + return CURLE_OUT_OF_MEMORY; + + mcode = curl_multi_add_handle(multi, easy); + if(mcode) { + curl_multi_cleanup(multi); + return CURLE_FAILED_INIT; + } + + /* we start some action by calling perform right away */ + + do { + while(CURLM_CALL_MULTI_PERFORM == + curl_multi_perform(multi, &still_running)); + + if(!still_running) + break; + + FD_ZERO(&fdread); + FD_ZERO(&fdwrite); + FD_ZERO(&fdexcep); + + /* timeout once per second */ + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + /* get file descriptors from the transfers */ + curl_multi_fdset(multi, &fdread, &fdwrite, &fdexcep, &maxfd); + + rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); + + if(rc == -1) + /* select error */ + break; + + /* timeout or data to send/receive => loop! */ + } while(still_running); + + msg = curl_multi_info_read(multi, &rc); + if(msg) + code = msg->data.result; + + mcode = curl_multi_remove_handle(multi, easy); + /* what to do if it fails? */ + + mcode = curl_multi_cleanup(multi); + /* what to do if it fails? */ + + return code; +} +#else +/* + * curl_easy_perform() is the external interface that performs a transfer + * previously setup. + */ +CURLcode curl_easy_perform(CURL *curl) +{ + struct SessionHandle *data = (struct SessionHandle *)curl; + + if(!data) + return CURLE_BAD_FUNCTION_ARGUMENT; + + if ( ! (data->share && data->share->hostcache) ) { + + if (Curl_global_host_cache_use(data) && + (data->dns.hostcachetype != HCACHE_GLOBAL)) { + if (data->dns.hostcachetype == HCACHE_PRIVATE) + Curl_hash_destroy(data->dns.hostcache); + data->dns.hostcache = Curl_global_host_cache_get(); + data->dns.hostcachetype = HCACHE_GLOBAL; + } + + if (!data->dns.hostcache) { + data->dns.hostcachetype = HCACHE_PRIVATE; + data->dns.hostcache = Curl_mk_dnscache(); + + if(!data->dns.hostcache) + /* While we possibly could survive and do good without a host cache, + the fact that creating it failed indicates that things are truly + screwed up and we should bail out! */ + return CURLE_OUT_OF_MEMORY; + } + + } + + if(!data->state.connc) { + /* oops, no connection cache, make one up */ + data->state.connc = Curl_mk_connc(CONNCACHE_PRIVATE, -1); + if(!data->state.connc) + return CURLE_OUT_OF_MEMORY; + } + + return Curl_perform(data); +} +#endif + +/* + * curl_easy_cleanup() is the external interface to cleaning/freeing the given + * easy handle. + */ +void curl_easy_cleanup(CURL *curl) +{ + struct SessionHandle *data = (struct SessionHandle *)curl; + + if(!data) + return; + + Curl_close(data); +} + +/* + * Store a pointed to the multi handle within the easy handle's data struct. + */ +void Curl_easy_addmulti(struct SessionHandle *data, + void *multi) +{ + data->multi = multi; +} + +void Curl_easy_initHandleData(struct SessionHandle *data) +{ + memset(&data->reqdata, 0, sizeof(struct HandleData)); + + data->reqdata.maxdownload = -1; +} + +/* + * curl_easy_getinfo() is an external interface that allows an app to retrieve + * information from a performed transfer and similar. + */ +CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...) +{ + va_list arg; + void *paramp; + struct SessionHandle *data = (struct SessionHandle *)curl; + + va_start(arg, info); + paramp = va_arg(arg, void *); + + return Curl_getinfo(data, info, paramp); +} + +/* + * curl_easy_duphandle() is an external interface to allow duplication of a + * given input easy handle. The returned handle will be a new working handle + * with all options set exactly as the input source handle. + */ +CURL *curl_easy_duphandle(CURL *incurl) +{ + bool fail = TRUE; + struct SessionHandle *data=(struct SessionHandle *)incurl; + + struct SessionHandle *outcurl = (struct SessionHandle *) + calloc(sizeof(struct SessionHandle), 1); + + if(NULL == outcurl) + return NULL; /* failure */ + + do { + + /* + * We setup a few buffers we need. We should probably make them + * get setup on-demand in the code, as that would probably decrease + * the likeliness of us forgetting to init a buffer here in the future. + */ + outcurl->state.headerbuff=(char*)malloc(HEADERSIZE); + if(!outcurl->state.headerbuff) { + break; + } + outcurl->state.headersize=HEADERSIZE; + + /* copy all userdefined values */ + outcurl->set = data->set; + + if(data->state.used_interface == Curl_if_multi) + outcurl->state.connc = data->state.connc; + else + outcurl->state.connc = Curl_mk_connc(CONNCACHE_PRIVATE, -1); + + if(!outcurl->state.connc) + break; + + outcurl->state.lastconnect = -1; + + outcurl->progress.flags = data->progress.flags; + outcurl->progress.callback = data->progress.callback; + +#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES) + if(data->cookies) { + /* If cookies are enabled in the parent handle, we enable them + in the clone as well! */ + outcurl->cookies = Curl_cookie_init(data, + data->cookies->filename, + outcurl->cookies, + data->set.cookiesession); + if(!outcurl->cookies) { + break; + } + } +#endif /* CURL_DISABLE_HTTP */ + + /* duplicate all values in 'change' */ + + if(data->change.url) { + outcurl->change.url = strdup(data->change.url); + if(!outcurl->change.url) + break; + outcurl->change.url_alloc = TRUE; + } + + if(data->change.referer) { + outcurl->change.referer = strdup(data->change.referer); + if(!outcurl->change.referer) + break; + outcurl->change.referer_alloc = TRUE; + } + +#ifdef USE_ARES + /* If we use ares, we setup a new ares channel for the new handle */ + if(ARES_SUCCESS != ares_init(&outcurl->state.areschannel)) + break; +#endif + +#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) + outcurl->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_OF_NETWORK); + outcurl->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK, + CURL_ICONV_CODESET_OF_HOST); + outcurl->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_FOR_UTF8); +#endif + + Curl_easy_initHandleData(outcurl); + + outcurl->magic = CURLEASY_MAGIC_NUMBER; + + fail = FALSE; /* we reach this point and thus we are OK */ + + } while(0); + + if(fail) { + if(outcurl) { + if(outcurl->state.connc->type == CONNCACHE_PRIVATE) + Curl_rm_connc(outcurl->state.connc); + if(outcurl->state.headerbuff) + free(outcurl->state.headerbuff); + if(outcurl->change.url) + free(outcurl->change.url); + if(outcurl->change.referer) + free(outcurl->change.referer); + free(outcurl); /* free the memory again */ + outcurl = NULL; + } + } + + return outcurl; +} + +/* + * curl_easy_reset() is an external interface that allows an app to re- + * initialize a session handle to the default values. + */ +void curl_easy_reset(CURL *curl) +{ + struct SessionHandle *data = (struct SessionHandle *)curl; + + Curl_safefree(data->reqdata.pathbuffer); + data->reqdata.pathbuffer=NULL; + + Curl_safefree(data->reqdata.proto.generic); + data->reqdata.proto.generic=NULL; + + /* zero out UserDefined data: */ + memset(&data->set, 0, sizeof(struct UserDefined)); + + /* zero out Progress data: */ + memset(&data->progress, 0, sizeof(struct Progress)); + + /* init Handle data */ + Curl_easy_initHandleData(data); + + /* The remainder of these calls have been taken from Curl_open() */ + + data->set.out = stdout; /* default output to stdout */ + data->set.in = stdin; /* default input from stdin */ + data->set.err = stderr; /* default stderr to stderr */ + + /* use fwrite as default function to store output */ + data->set.fwrite = (curl_write_callback)fwrite; + + /* use fread as default function to read input */ + data->set.fread = (curl_read_callback)fread; + + data->set.infilesize = -1; /* we don't know any size */ + data->set.postfieldsize = -1; + + data->state.current_speed = -1; /* init to negative == impossible */ + + data->set.httpreq = HTTPREQ_GET; /* Default HTTP request */ + data->set.ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */ + data->set.ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */ + + data->set.dns_cache_timeout = 60; /* Timeout every 60 seconds by default */ + + /* make libcurl quiet by default: */ + data->set.hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */ + data->progress.flags |= PGRS_HIDE; + + /* Set the default size of the SSL session ID cache */ + data->set.ssl.numsessions = 5; + + data->set.proxyport = 1080; + data->set.proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */ + data->set.httpauth = CURLAUTH_BASIC; /* defaults to basic */ + data->set.proxyauth = CURLAUTH_BASIC; /* defaults to basic */ + + /* + * libcurl 7.10 introduced SSL verification *by default*! This needs to be + * switched off unless wanted. + */ + data->set.ssl.verifypeer = TRUE; + data->set.ssl.verifyhost = 2; +#ifdef CURL_CA_BUNDLE + /* This is our preferred CA cert bundle since install time */ + data->set.ssl.CAfile = (char *)CURL_CA_BUNDLE; +#endif + + data->set.ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth + type */ +} + +#ifdef CURL_DOES_CONVERSIONS +/* + * Curl_convert_to_network() is an internal function + * for performing ASCII conversions on non-ASCII platforms. + */ +CURLcode Curl_convert_to_network(struct SessionHandle *data, + char *buffer, size_t length) +{ + CURLcode rc; + + if(data->set.convtonetwork) { + /* use translation callback */ + rc = data->set.convtonetwork(buffer, length); + if(rc != CURLE_OK) { + failf(data, + "CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %i: %s", + rc, curl_easy_strerror(rc)); + } + return(rc); + } else { +#ifdef HAVE_ICONV + /* do the translation ourselves */ + char *input_ptr, *output_ptr; + size_t in_bytes, out_bytes, rc; + + /* open an iconv conversion descriptor if necessary */ + if(data->outbound_cd == (iconv_t)-1) { + data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK, + CURL_ICONV_CODESET_OF_HOST); + if(data->outbound_cd == (iconv_t)-1) { + failf(data, + "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", + CURL_ICONV_CODESET_OF_NETWORK, + CURL_ICONV_CODESET_OF_HOST, + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } + } + /* call iconv */ + input_ptr = output_ptr = buffer; + in_bytes = out_bytes = length; + rc = iconv(data->outbound_cd, (const char**)&input_ptr, &in_bytes, + &output_ptr, &out_bytes); + if ((rc == ICONV_ERROR) || (in_bytes != 0)) { + failf(data, + "The Curl_convert_to_network iconv call failed with errno %i: %s", + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } +#else + failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required"); + return CURLE_CONV_REQD; +#endif /* HAVE_ICONV */ + } + + return CURLE_OK; +} + +/* + * Curl_convert_from_network() is an internal function + * for performing ASCII conversions on non-ASCII platforms. + */ +CURLcode Curl_convert_from_network(struct SessionHandle *data, + char *buffer, size_t length) +{ + CURLcode rc; + + if(data->set.convfromnetwork) { + /* use translation callback */ + rc = data->set.convfromnetwork(buffer, length); + if(rc != CURLE_OK) { + failf(data, + "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %i: %s", + rc, curl_easy_strerror(rc)); + } + return(rc); + } else { +#ifdef HAVE_ICONV + /* do the translation ourselves */ + char *input_ptr, *output_ptr; + size_t in_bytes, out_bytes, rc; + + /* open an iconv conversion descriptor if necessary */ + if(data->inbound_cd == (iconv_t)-1) { + data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_OF_NETWORK); + if(data->inbound_cd == (iconv_t)-1) { + failf(data, + "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", + CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_OF_NETWORK, + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } + } + /* call iconv */ + input_ptr = output_ptr = buffer; + in_bytes = out_bytes = length; + rc = iconv(data->inbound_cd, (const char **)&input_ptr, &in_bytes, + &output_ptr, &out_bytes); + if ((rc == ICONV_ERROR) || (in_bytes != 0)) { + failf(data, + "The Curl_convert_from_network iconv call failed with errno %i: %s", + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } +#else + failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required"); + return CURLE_CONV_REQD; +#endif /* HAVE_ICONV */ + } + + return CURLE_OK; +} + +/* + * Curl_convert_from_utf8() is an internal function + * for performing UTF-8 conversions on non-ASCII platforms. + */ +CURLcode Curl_convert_from_utf8(struct SessionHandle *data, + char *buffer, size_t length) +{ + CURLcode rc; + + if(data->set.convfromutf8) { + /* use translation callback */ + rc = data->set.convfromutf8(buffer, length); + if(rc != CURLE_OK) { + failf(data, + "CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %i: %s", + rc, curl_easy_strerror(rc)); + } + return(rc); + } else { +#ifdef HAVE_ICONV + /* do the translation ourselves */ + char *input_ptr, *output_ptr; + size_t in_bytes, out_bytes, rc; + + /* open an iconv conversion descriptor if necessary */ + if(data->utf8_cd == (iconv_t)-1) { + data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_FOR_UTF8); + if(data->utf8_cd == (iconv_t)-1) { + failf(data, + "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", + CURL_ICONV_CODESET_OF_HOST, + CURL_ICONV_CODESET_FOR_UTF8, + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } + } + /* call iconv */ + input_ptr = output_ptr = buffer; + in_bytes = out_bytes = length; + rc = iconv(data->utf8_cd, (const char**)&input_ptr, &in_bytes, + &output_ptr, &out_bytes); + if ((rc == ICONV_ERROR) || (in_bytes != 0)) { + failf(data, + "The Curl_convert_from_utf8 iconv call failed with errno %i: %s", + errno, strerror(errno)); + return CURLE_CONV_FAILED; + } + if (output_ptr < input_ptr) { + /* null terminate the now shorter output string */ + *output_ptr = 0x00; + } +#else + failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required"); + return CURLE_CONV_REQD; +#endif /* HAVE_ICONV */ + } + + return CURLE_OK; +} + +#endif /* CURL_DOES_CONVERSIONS */ |