diff options
Diffstat (limited to 'libmpdemux/http.c')
-rw-r--r-- | libmpdemux/http.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/libmpdemux/http.c b/libmpdemux/http.c new file mode 100644 index 0000000000..75157fccf0 --- /dev/null +++ b/libmpdemux/http.c @@ -0,0 +1,296 @@ +/* + * HTTP Helper + * by Bertrand Baudet <bertrand_baudet@yahoo.com> + * (C) 2001, MPlayer team. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "http.h" + +HTTP_header_t * +http_new_header() { + HTTP_header_t *http_hdr; + + http_hdr = (HTTP_header_t*)malloc(sizeof(HTTP_header_t)); + if( http_hdr==NULL ) return NULL; + memset( http_hdr, 0, sizeof(HTTP_header_t) ); + + return http_hdr; +} + +void +http_free( HTTP_header_t *http_hdr ) { + int i; + if( http_hdr==NULL ) return; + if( http_hdr->protocol!=NULL ) free( http_hdr->protocol ); + if( http_hdr->uri!=NULL ) free( http_hdr->uri ); + if( http_hdr->reason_phrase!=NULL ) free( http_hdr->reason_phrase ); + if( http_hdr->body!=NULL ) free( http_hdr->body ); + if( http_hdr->field_search!=NULL ) free( http_hdr->field_search ); + if( http_hdr->method!=NULL ) free( http_hdr->method ); + if( http_hdr->buffer!=NULL ) free( http_hdr->buffer ); + for( i=0 ; i<http_hdr->field_nb ; i++ ) + if( http_hdr->fields[i]!=NULL ) free( http_hdr->fields[i] ); + free( http_hdr ); +} + +int +http_response_append( HTTP_header_t *http_hdr, char *response, int length ) { + char *ptr = NULL; + if( http_hdr==NULL || response==NULL || length<0 ) return -1; + ptr = (char*)malloc( http_hdr->buffer_size+length ); + if( ptr==NULL ) { + printf("Memory allocation failed\n"); + return -1; + } + if( http_hdr->buffer_size==0 ) { + // Buffer empty, copy response into it. + memcpy( ptr, response, length ); + http_hdr->buffer_size = length; + } else { + // Buffer not empty, grow buffer, copy and append the response. + memcpy( ptr, http_hdr->buffer, http_hdr->buffer_size ); + free( http_hdr->buffer ); + memcpy( ptr+http_hdr->buffer_size, response, length ); + http_hdr->buffer_size += length; + } + http_hdr->buffer = ptr; + return http_hdr->buffer_size; +} + +int +http_is_header_entired( HTTP_header_t *http_hdr ) { + if( http_hdr==NULL ) return -1; + + if( strstr(http_hdr->buffer, "\r\n\r\n")==NULL ) return 0; + else return 1; +} + +int +http_response_parse( HTTP_header_t *http_hdr ) { + char *hdr_ptr, *ptr; + char *field=NULL; + int pos_hdr_sep, len; + if( http_hdr==NULL ) return -1; + if( http_hdr->is_parsed ) return 0; + + // Get the protocol + hdr_ptr = strstr( http_hdr->buffer, " " ); + if( hdr_ptr==NULL ) { + printf("Malformed answer. No space separator found.\n"); + return -1; + } + len = hdr_ptr-http_hdr->buffer; + http_hdr->protocol = (char*)malloc(len+1); + if( http_hdr->protocol==NULL ) { + printf("Memory allocation failed\n"); + return -1; + } + strncpy( http_hdr->protocol, http_hdr->buffer, len ); + http_hdr->protocol[len]='\0'; + if( !strncasecmp( http_hdr->protocol, "HTTP", 4) ) { + if( sscanf( http_hdr->protocol+5,"1.%d", &(http_hdr->http_minor_version) )!=1 ) { + printf("Malformed answer. Unable to get HTTP minor version.\n"); + return -1; + } + } + + // Get the status code + if( sscanf( ++hdr_ptr, "%d", &(http_hdr->status_code) )!=1 ) { + printf("Malformed answer. Unable to get status code.\n"); + return -1; + } + hdr_ptr += 4; + + // Get the reason phrase + ptr = strstr( hdr_ptr, "\r\n" ); + if( hdr_ptr==NULL ) { + printf("Malformed answer. Unable to get the reason phrase.\n"); + return -1; + } + len = ptr-hdr_ptr; + http_hdr->reason_phrase = (char*)malloc(len+1); + if( http_hdr->reason_phrase==NULL ) { + printf("Memory allocation failed\n"); + return -1; + } + strncpy( http_hdr->reason_phrase, hdr_ptr, len ); + http_hdr->reason_phrase[len]='\0'; + + // Set the position of the header separator: \r\n\r\n + ptr = strstr( http_hdr->buffer, "\r\n\r\n" ); + if( ptr==NULL ) { + printf("Header may be incomplete. No CRLF CRLF found.\n"); + return -1; + } + pos_hdr_sep = ptr-http_hdr->buffer; + + hdr_ptr = strstr( http_hdr->buffer, "\r\n" )+2; + do { + ptr = strstr( hdr_ptr, "\r\n"); + if( ptr==NULL ) { + printf("No CRLF found\n"); + return -1; + } + len = ptr-hdr_ptr; + field = (char*)realloc(field, len+1); + if( field==NULL ) { + printf("Memory allocation failed\n"); + return -1; + } + strncpy( field, hdr_ptr, len ); + field[len]='\0'; + http_set_field( http_hdr, field ); + hdr_ptr = ptr+2; + } while( hdr_ptr<(http_hdr->buffer+pos_hdr_sep) ); + + if( field!=NULL ) free( field ); + + if( pos_hdr_sep+4<http_hdr->buffer_size ) { + // Response has data! + int data_length = http_hdr->buffer_size-(pos_hdr_sep+4); + http_hdr->body = (char*)malloc( data_length ); + if( http_hdr->body==NULL ) { + printf("Memory allocation failed\n"); + return -1; + } + memcpy( http_hdr->body, http_hdr->buffer+pos_hdr_sep+4, data_length ); + http_hdr->body_size = data_length; + } + + http_hdr->is_parsed = 1; + return 0; +} + +char * +http_build_request( HTTP_header_t *http_hdr ) { + char *ptr; + int i; + int len; + if( http_hdr==NULL ) return NULL; + + if( http_hdr->method==NULL ) http_set_method( http_hdr, "GET"); + if( http_hdr->uri==NULL ) http_set_uri( http_hdr, "/"); + + // Compute the request length + len = strlen(http_hdr->method)+strlen(http_hdr->uri)+12; // Method line + for( i=0 ; i<http_hdr->field_nb ; i++ ) // Fields + len += strlen(http_hdr->fields[i])+2; + len += 2; // CRLF + if( http_hdr->body!=NULL ) { + len += http_hdr->body_size; + } + if( http_hdr->buffer!=NULL ) { + free( http_hdr->buffer ); + http_hdr->buffer = NULL; + } + http_hdr->buffer = (char*)malloc(len); + if( http_hdr->buffer==NULL ) { + printf("Memory allocation failed\n"); + return NULL; + } + http_hdr->buffer_size = len; + + ptr = http_hdr->buffer; + ptr += sprintf( ptr, "%s %s HTTP/1.%d\r\n", http_hdr->method, http_hdr->uri, http_hdr->http_minor_version ); + for( i=0 ; i<http_hdr->field_nb ; i++ ) + ptr += sprintf( ptr, "%s\r\n", http_hdr->fields[i] ); + ptr += sprintf( ptr, "\r\n" ); + if( http_hdr->body!=NULL ) { + memcpy( ptr, http_hdr->body, http_hdr->body_size ); + } + return http_hdr->buffer; +} + +char * +http_get_field( HTTP_header_t *http_hdr, const char *field_name ) { + if( http_hdr==NULL || field_name==NULL ) return NULL; + http_hdr->search_pos = 0; + if( http_hdr->field_search!=NULL ) free( http_hdr->field_search ); + http_hdr->field_search = (char*)malloc(strlen(field_name)+1); + if( http_hdr->field_search==NULL ) { + printf("Memory allocation failed\n"); + return NULL; + } + strcpy( http_hdr->field_search, field_name ); + return http_get_next_field( http_hdr ); +} + +char * +http_get_next_field( HTTP_header_t *http_hdr ) { + char *ptr; + int i; + if( http_hdr==NULL ) return NULL; + + for( i=http_hdr->search_pos ; i<http_hdr->field_nb ; i++ ) { + ptr = strstr( http_hdr->fields[i], ":" ); + if( ptr==NULL ) return NULL; + if( !strncasecmp( http_hdr->fields[i], http_hdr->field_search, ptr-http_hdr->fields[i] ) ) { + ptr++; // Skip the column + while( ptr[0]==' ' ) ptr++; // Skip the spaces if there is some + http_hdr->search_pos = i+1; + return ptr; // return the value without the field name + } + } + return NULL; +} + +void +http_set_field( HTTP_header_t *http_hdr, const char *field ) { + int pos; + if( http_hdr==NULL || field==NULL ) return; + + pos = http_hdr->field_nb; + + http_hdr->fields[pos] = (char*)malloc(strlen(field)+1); + if( http_hdr->fields[pos]==NULL ) { + printf("Memory allocation failed\n"); + return; + } + http_hdr->field_nb++; + strcpy( http_hdr->fields[pos], field ); +} + +void +http_set_method( HTTP_header_t *http_hdr, const char *method ) { + if( http_hdr==NULL || method==NULL ) return; + + http_hdr->method = (char*)malloc(strlen(method)+1); + if( http_hdr->method==NULL ) { + printf("Memory allocation failed\n"); + return; + } + strcpy( http_hdr->method, method ); +} + +void +http_set_uri( HTTP_header_t *http_hdr, const char *uri ) { + if( http_hdr==NULL || uri==NULL ) return; + + http_hdr->uri = (char*)malloc(strlen(uri)+1); + if( http_hdr->uri==NULL ) { + printf("Memory allocation failed\n"); + return; + } + strcpy( http_hdr->uri, uri ); +} + +void +http_debug_hdr( HTTP_header_t *http_hdr ) { + int i; + if( http_hdr==NULL ) return; + + printf("protocol: %s\n", http_hdr->protocol ); + printf("http minor version: %d\n", http_hdr->http_minor_version ); + printf("uri: %s\n", http_hdr->uri ); + printf("method: %s\n", http_hdr->method ); + printf("status code: %d\n", http_hdr->status_code ); + printf("reason phrase: %s\n", http_hdr->reason_phrase ); + + printf("Fields:\n"); + for( i=0 ; i<http_hdr->field_nb ; i++ ) + printf(" %d - %s\n", i, http_hdr->fields[i] ); +} |