From 0435800f65ce3eddd11ad6d6877d4d0818bfcaa6 Mon Sep 17 00:00:00 2001 From: Yang Tse Date: Mon, 3 Oct 2011 22:59:38 +0200 Subject: curl tool: reviewed code moved to tool_*.[ch] files --- src/tool_formparse.c | 321 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 321 insertions(+) create mode 100644 src/tool_formparse.c (limited to 'src/tool_formparse.c') diff --git a/src/tool_formparse.c b/src/tool_formparse.c new file mode 100644 index 000000000..5d6263e5c --- /dev/null +++ b/src/tool_formparse.c @@ -0,0 +1,321 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2011, Daniel Stenberg, , 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. + * + ***************************************************************************/ +#include "setup.h" + +#include + +#include "rawstr.h" + +#define ENABLE_CURLX_PRINTF +/* use our own printf() functions */ +#include "curlx.h" + +#include "tool_cfgable.h" +#include "tool_mfiles.h" +#include "tool_msgs.h" +#include "tool_formparse.h" + +#include "memdebug.h" /* keep this as LAST include */ + +/*************************************************************************** + * + * formparse() + * + * Reads a 'name=value' parameter and builds the appropriate linked list. + * + * Specify files to upload with 'name=@filename'. Supports specified + * given Content-Type of the files. Such as ';type='. + * + * If literal_value is set, any initial '@' or '<' in the value string + * loses its special meaning, as does any embedded ';type='. + * + * You may specify more than one file for a single name (field). Specify + * multiple files by writing it like: + * + * 'name=@filename,filename2,filename3' + * + * If you want content-types specified for each too, write them like: + * + * 'name=@filename;type=image/gif,filename2,filename3' + * + * If you want custom headers added for a single part, write them in a separate + * file and do like this: + * + * 'name=foo;headers=@headerfile' or why not + * 'name=@filemame;headers=@headerfile' + * + * To upload a file, but to fake the file name that will be included in the + * formpost, do like this: + * + * 'name=@filename;filename=/dev/null' + * + * This function uses curl_formadd to fulfill it's job. Is heavily based on + * the old curl_formparse code. + * + ***************************************************************************/ + +#define FORM_FILE_SEPARATOR ',' +#define FORM_TYPE_SEPARATOR ';' + +int formparse(struct Configurable *config, + const char *input, + struct curl_httppost **httppost, + struct curl_httppost **last_post, + bool literal_value) +{ + /* nextarg MUST be a string in the format 'name=contents' and we'll + build a linked list with the info */ + char name[256]; + char *contents = NULL; + char major[128]; + char minor[128]; + char *contp; + const char *type = NULL; + char *sep; + char *sep2; + + if((1 == sscanf(input, "%255[^=]=", name)) && + ((contp = strchr(input, '=')) != NULL)) { + /* the input was using the correct format */ + + /* Allocate the contents */ + contents = strdup(contp+1); + if(!contents) { + fprintf(config->errors, "out of memory\n"); + return 1; + } + contp = contents; + + if('@' == contp[0] && !literal_value) { + + /* we use the @-letter to indicate file name(s) */ + + struct multi_files *multi_start = NULL; + struct multi_files *multi_current = NULL; + + contp++; + + do { + /* since this was a file, it may have a content-type specifier + at the end too, or a filename. Or both. */ + char *ptr; + char *filename = NULL; + + sep = strchr(contp, FORM_TYPE_SEPARATOR); + sep2 = strchr(contp, FORM_FILE_SEPARATOR); + + /* pick the closest */ + if(sep2 && (sep2 < sep)) { + sep = sep2; + + /* no type was specified! */ + } + + type = NULL; + + if(sep) { + + /* if we got here on a comma, don't do much */ + if(FORM_FILE_SEPARATOR == *sep) + ptr = NULL; + else + ptr = sep+1; + + *sep = '\0'; /* terminate file name at separator */ + + while(ptr && (FORM_FILE_SEPARATOR!= *ptr)) { + + /* pass all white spaces */ + while(ISSPACE(*ptr)) + ptr++; + + if(checkprefix("type=", ptr)) { + /* set type pointer */ + type = &ptr[5]; + + /* verify that this is a fine type specifier */ + if(2 != sscanf(type, "%127[^/]/%127[^;,\n]", + major, minor)) { + warnf(config, "Illegally formatted content-type field!\n"); + Curl_safefree(contents); + FreeMultiInfo(&multi_start, &multi_current); + return 2; /* illegal content-type syntax! */ + } + + /* now point beyond the content-type specifier */ + sep = (char *)type + strlen(major)+strlen(minor)+1; + + /* there's a semicolon following - we check if it is a filename + specified and if not we simply assume that it is text that + the user wants included in the type and include that too up + to the next zero or semicolon. */ + if((*sep==';') && !checkprefix(";filename=", sep)) { + sep2 = strchr(sep+1, ';'); + if(sep2) + sep = sep2; + else + sep = sep + strlen(sep); /* point to end of string */ + } + + if(*sep) { + *sep = '\0'; /* zero terminate type string */ + + ptr = sep+1; + } + else + ptr = NULL; /* end */ + } + else if(checkprefix("filename=", ptr)) { + filename = &ptr[9]; + ptr = strchr(filename, FORM_TYPE_SEPARATOR); + if(!ptr) { + ptr = strchr(filename, FORM_FILE_SEPARATOR); + } + if(ptr) { + *ptr = '\0'; /* zero terminate */ + ptr++; + } + } + else + /* confusion, bail out of loop */ + break; + } + /* find the following comma */ + if(ptr) + sep = strchr(ptr, FORM_FILE_SEPARATOR); + else + sep = NULL; + } + else { + sep = strchr(contp, FORM_FILE_SEPARATOR); + } + if(sep) { + /* the next file name starts here */ + *sep = '\0'; + sep++; + } + /* if type == NULL curl_formadd takes care of the problem */ + + if(!AddMultiFiles(contp, type, filename, &multi_start, + &multi_current)) { + warnf(config, "Error building form post!\n"); + Curl_safefree(contents); + FreeMultiInfo(&multi_start, &multi_current); + return 3; + } + contp = sep; /* move the contents pointer to after the separator */ + + } while(sep && *sep); /* loop if there's another file name */ + + /* now we add the multiple files section */ + if(multi_start) { + struct curl_forms *forms = NULL; + struct multi_files *ptr = multi_start; + unsigned int i, count = 0; + while(ptr) { + ptr = ptr->next; + ++count; + } + forms = malloc((count+1)*sizeof(struct curl_forms)); + if(!forms) { + fprintf(config->errors, "Error building form post!\n"); + Curl_safefree(contents); + FreeMultiInfo(&multi_start, &multi_current); + return 4; + } + for(i = 0, ptr = multi_start; i < count; ++i, ptr = ptr->next) { + forms[i].option = ptr->form.option; + forms[i].value = ptr->form.value; + } + forms[count].option = CURLFORM_END; + FreeMultiInfo(&multi_start, &multi_current); + if(curl_formadd(httppost, last_post, + CURLFORM_COPYNAME, name, + CURLFORM_ARRAY, forms, CURLFORM_END) != 0) { + warnf(config, "curl_formadd failed!\n"); + Curl_safefree(forms); + Curl_safefree(contents); + return 5; + } + Curl_safefree(forms); + } + } + else { + struct curl_forms info[4]; + int i = 0; + char *ct = literal_value ? NULL : strstr(contp, ";type="); + + info[i].option = CURLFORM_COPYNAME; + info[i].value = name; + i++; + + if(ct) { + info[i].option = CURLFORM_CONTENTTYPE; + info[i].value = &ct[6]; + i++; + ct[0] = '\0'; /* zero terminate here */ + } + + if(contp[0]=='<' && !literal_value) { + info[i].option = CURLFORM_FILECONTENT; + info[i].value = contp+1; + i++; + info[i].option = CURLFORM_END; + + if(curl_formadd(httppost, last_post, + CURLFORM_ARRAY, info, CURLFORM_END ) != 0) { + warnf(config, "curl_formadd failed, possibly the file %s is bad!\n", + contp+1); + Curl_safefree(contents); + return 6; + } + } + else { +#ifdef CURL_DOES_CONVERSIONS + if(convert_to_network(contp, strlen(contp))) { + warnf(config, "curl_formadd failed!\n"); + Curl_safefree(contents); + return 7; + } +#endif + info[i].option = CURLFORM_COPYCONTENTS; + info[i].value = contp; + i++; + info[i].option = CURLFORM_END; + if(curl_formadd(httppost, last_post, + CURLFORM_ARRAY, info, CURLFORM_END) != 0) { + warnf(config, "curl_formadd failed!\n"); + Curl_safefree(contents); + return 8; + } + } + } + + } + else { + warnf(config, "Illegally formatted input field!\n"); + return 1; + } + Curl_safefree(contents); + return 0; +} + -- cgit v1.2.3