summaryrefslogtreecommitdiffstats
path: root/core/asxparser.c
diff options
context:
space:
mode:
Diffstat (limited to 'core/asxparser.c')
-rw-r--r--core/asxparser.c592
1 files changed, 592 insertions, 0 deletions
diff --git a/core/asxparser.c b/core/asxparser.c
new file mode 100644
index 0000000000..44236b8c18
--- /dev/null
+++ b/core/asxparser.c
@@ -0,0 +1,592 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "playlist.h"
+#include "playlist_parser.h"
+#include "stream/stream.h"
+#include "libmpdemux/demuxer.h"
+#include "asxparser.h"
+#include "mp_msg.h"
+
+
+typedef struct ASX_Parser_t ASX_Parser_t;
+
+typedef struct {
+ char* buffer;
+ int line;
+} ASX_LineSave_t;
+
+struct ASX_Parser_t {
+ int line; // Curent line
+ ASX_LineSave_t *ret_stack;
+ int ret_stack_size;
+ char* last_body;
+ int deep;
+ struct playlist *pl;
+};
+
+ASX_Parser_t *asx_parser_new(struct playlist *pl);
+
+void
+asx_parser_free(ASX_Parser_t* parser);
+
+/*
+ * Return -1 on error, 0 when nothing is found, 1 on sucess
+ */
+int
+asx_get_element(ASX_Parser_t* parser,char** _buffer,
+ char** _element,char** _body,char*** _attribs);
+
+int
+asx_parse_attribs(ASX_Parser_t* parser,char* buffer,char*** _attribs);
+
+/////// Attribs utils
+
+char*
+asx_get_attrib(const char* attrib,char** attribs);
+
+#define asx_free_attribs(a) asx_list_free(&a,free)
+
+////// List utils
+
+typedef void (*ASX_FreeFunc)(void* arg);
+
+void
+asx_list_free(void* list_ptr,ASX_FreeFunc free_func);
+
+
+////// List utils
+
+void
+asx_list_free(void* list_ptr,ASX_FreeFunc free_func) {
+ void** ptr = *(void***)list_ptr;
+ if(ptr == NULL) return;
+ if(free_func != NULL) {
+ for( ; *ptr != NULL ; ptr++)
+ free_func(*ptr);
+ }
+ free(*(void**)list_ptr);
+ *(void**)list_ptr = NULL;
+}
+
+/////// Attribs utils
+
+char*
+asx_get_attrib(const char* attrib,char** attribs) {
+ char** ptr;
+
+ if(attrib == NULL || attribs == NULL) return NULL;
+ for(ptr = attribs; ptr[0] != NULL; ptr += 2){
+ if(strcasecmp(ptr[0],attrib) == 0)
+ return strdup(ptr[1]);
+ }
+ return NULL;
+}
+
+#define asx_warning_attrib_required(p,e,a) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : element %s don't have the required attribute %s",p->line,e,a)
+#define asx_warning_body_parse_error(p,e) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing %s body",p->line,e)
+
+ASX_Parser_t *asx_parser_new(struct playlist *pl)
+{
+ ASX_Parser_t* parser = calloc(1,sizeof(ASX_Parser_t));
+ parser->pl = pl;
+ return parser;
+}
+
+void
+asx_parser_free(ASX_Parser_t* parser) {
+ if(!parser) return;
+ free(parser->ret_stack);
+ free(parser);
+
+}
+
+#define LETTER "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+#define SPACE " \n\t\r"
+
+int
+asx_parse_attribs(ASX_Parser_t* parser,char* buffer,char*** _attribs) {
+ char *ptr1, *ptr2, *ptr3;
+ int n_attrib = 0;
+ char **attribs = NULL;
+ char *attrib, *val;
+
+ ptr1 = buffer;
+ while(1) {
+ for( ; strchr(SPACE,*ptr1) != NULL; ptr1++) { // Skip space
+ if(*ptr1 == '\0') break;
+ }
+ ptr3 = strchr(ptr1,'=');
+ if(ptr3 == NULL) break;
+ for(ptr2 = ptr3-1; strchr(SPACE,*ptr2) != NULL; ptr2--) {
+ if (ptr2 == ptr1) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : this should never append, back to attribute begin while skipping end space",parser->line);
+ break;
+ }
+ }
+ attrib = malloc(ptr2-ptr1+2);
+ strncpy(attrib,ptr1,ptr2-ptr1+1);
+ attrib[ptr2-ptr1+1] = '\0';
+
+ ptr1 = strchr(ptr3,'"');
+ if(ptr1 == NULL || ptr1[1] == '\0') ptr1 = strchr(ptr3,'\'');
+ if(ptr1 == NULL || ptr1[1] == '\0') {
+ mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : can't find attribute %s value",parser->line,attrib);
+ free(attrib);
+ break;
+ }
+ ptr2 = strchr(ptr1+1,ptr1[0]);
+ if (ptr2 == NULL) {
+ mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : value of attribute %s isn't finished",parser->line,attrib);
+ free(attrib);
+ break;
+ }
+ ptr1++;
+ val = malloc(ptr2-ptr1+1);
+ strncpy(val,ptr1,ptr2-ptr1);
+ val[ptr2-ptr1] = '\0';
+ n_attrib++;
+
+ attribs = realloc(attribs, (2 * n_attrib + 1) * sizeof(char*));
+ attribs[n_attrib*2-2] = attrib;
+ attribs[n_attrib*2-1] = val;
+
+ ptr1 = ptr2+1;
+ }
+
+ if(n_attrib > 0)
+ attribs[n_attrib*2] = NULL;
+
+ *_attribs = attribs;
+
+ return n_attrib;
+}
+
+/*
+ * Return -1 on error, 0 when nothing is found, 1 on sucess
+ */
+int
+asx_get_element(ASX_Parser_t* parser,char** _buffer,
+ char** _element,char** _body,char*** _attribs) {
+ char *ptr1,*ptr2, *ptr3, *ptr4;
+ char *attribs = NULL;
+ char *element = NULL, *body = NULL, *ret = NULL, *buffer;
+ int n_attrib = 0;
+ int body_line = 0,attrib_line,ret_line,in = 0;
+ int quotes = 0;
+
+ if(_buffer == NULL || _element == NULL || _body == NULL || _attribs == NULL) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : asx_get_element called with invalid value",parser->line);
+ return -1;
+ }
+
+ *_body = *_element = NULL;
+ *_attribs = NULL;
+ buffer = *_buffer;
+
+ if(buffer == NULL) return 0;
+
+ if(parser->ret_stack && /*parser->last_body && */buffer != parser->last_body) {
+ ASX_LineSave_t* ls = parser->ret_stack;
+ int i;
+ for(i = 0 ; i < parser->ret_stack_size ; i++) {
+ if(buffer == ls[i].buffer) {
+ parser->line = ls[i].line;
+ break;
+ }
+
+ }
+ if( i < parser->ret_stack_size) {
+ i++;
+ if( i < parser->ret_stack_size)
+ memmove(parser->ret_stack,parser->ret_stack+i, (parser->ret_stack_size - i)*sizeof(ASX_LineSave_t));
+ parser->ret_stack_size -= i;
+ if(parser->ret_stack_size > 0)
+ parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t));
+ else {
+ free(parser->ret_stack);
+ parser->ret_stack = NULL;
+ }
+ }
+ }
+
+ ptr1 = buffer;
+ while(1) {
+ for( ; ptr1[0] != '<' ; ptr1++) {
+ if(ptr1[0] == '\0') {
+ ptr1 = NULL;
+ break;
+ }
+ if(ptr1[0] == '\n') parser->line++;
+ }
+ //ptr1 = strchr(ptr1,'<');
+ if(!ptr1 || ptr1[1] == '\0') return 0; // Nothing found
+
+ if(strncmp(ptr1,"<!--",4) == 0) { // Comments
+ for( ; strncmp(ptr1,"-->",3) != 0 ; ptr1++) {
+ if(ptr1[0] == '\0') {
+ ptr1 = NULL;
+ break;
+ }
+ if(ptr1[0] == '\n') parser->line++;
+ }
+ //ptr1 = strstr(ptr1,"-->");
+ if(!ptr1) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : unfinished comment",parser->line);
+ return -1;
+ }
+ } else {
+ break;
+ }
+ }
+
+ // Is this space skip very useful ??
+ for(ptr1++; strchr(SPACE,ptr1[0]) != NULL; ptr1++) { // Skip space
+ if(ptr1[0] == '\0') {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
+ return -1;
+ }
+ if(ptr1[0] == '\n') parser->line++;
+ }
+
+ for(ptr2 = ptr1; strchr(LETTER,*ptr2) != NULL;ptr2++) { // Go to end of name
+ if(*ptr2 == '\0'){
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
+ return -1;
+ }
+ if(ptr2[0] == '\n') parser->line++;
+ }
+
+ element = malloc(ptr2-ptr1+1);
+ strncpy(element,ptr1,ptr2-ptr1);
+ element[ptr2-ptr1] = '\0';
+
+ for( ; strchr(SPACE,*ptr2) != NULL; ptr2++) { // Skip space
+ if(ptr2[0] == '\0') {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
+ free(element);
+ return -1;
+ }
+ if(ptr2[0] == '\n') parser->line++;
+ }
+ attrib_line = parser->line;
+
+
+
+ for(ptr3 = ptr2; ptr3[0] != '\0'; ptr3++) { // Go to element end
+ if(ptr3[0] == '"') quotes ^= 1;
+ if(!quotes && (ptr3[0] == '>' || strncmp(ptr3,"/>",2) == 0))
+ break;
+ if(ptr3[0] == '\n') parser->line++;
+ }
+ if(ptr3[0] == '\0' || ptr3[1] == '\0') { // End of file
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
+ free(element);
+ return -1;
+ }
+
+ // Save attribs string
+ if(ptr3-ptr2 > 0) {
+ attribs = malloc(ptr3-ptr2+1);
+ strncpy(attribs,ptr2,ptr3-ptr2);
+ attribs[ptr3-ptr2] = '\0';
+ }
+ //bs_line = parser->line;
+ if(ptr3[0] != '/') { // Not Self closed element
+ ptr3++;
+ for( ; strchr(SPACE,*ptr3) != NULL; ptr3++) { // Skip space on body begin
+ if(*ptr3 == '\0') {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element);
+ free(element);
+ free(attribs);
+ return -1;
+ }
+ if(ptr3[0] == '\n') parser->line++;
+ }
+ ptr4 = ptr3;
+ body_line = parser->line;
+ while(1) { // Find closing element
+ for( ; ptr4[0] != '<' ; ptr4++) {
+ if(ptr4[0] == '\0') {
+ ptr4 = NULL;
+ break;
+ }
+ if(ptr4[0] == '\n') parser->line++;
+ }
+ if(ptr4 && strncmp(ptr4,"<!--",4) == 0) { // Comments
+ for( ; strncmp(ptr4,"-->",3) != 0 ; ptr4++) {
+ if(ptr4[0] == '\0') {
+ ptr4 = NULL;
+ break;
+ }
+ if(ptr1[0] == '\n') parser->line++;
+ }
+ continue;
+ }
+ if(ptr4 == NULL || ptr4[1] == '\0') {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element);
+ free(element);
+ free(attribs);
+ return -1;
+ }
+ if(ptr4[1] != '/' && strncasecmp(element,ptr4+1,strlen(element)) == 0) {
+ in++;
+ ptr4+=2;
+ continue;
+ } else if(strncasecmp(element,ptr4+2,strlen(element)) == 0) { // Extract body
+ if(in > 0) {
+ in--;
+ ptr4 += 2+strlen(element);
+ continue;
+ }
+ ret = ptr4+strlen(element)+3;
+ if(ptr4 != ptr3) {
+ ptr4--;
+ for( ; ptr4 != ptr3 && strchr(SPACE,*ptr4) != NULL; ptr4--) ;// Skip space on body end
+ // if(ptr4[0] == '\0') parser->line--;
+ //}
+ ptr4++;
+ body = malloc(ptr4-ptr3+1);
+ strncpy(body,ptr3,ptr4-ptr3);
+ body[ptr4-ptr3] = '\0';
+ }
+ break;
+ } else {
+ ptr4 += 2;
+ }
+ }
+ } else {
+ ret = ptr3 + 2; // 2 is for />
+ }
+
+ for( ; ret[0] != '\0' && strchr(SPACE,ret[0]) != NULL; ret++) { // Skip space
+ if(ret[0] == '\n') parser->line++;
+ }
+
+ ret_line = parser->line;
+
+ if(attribs) {
+ parser->line = attrib_line;
+ n_attrib = asx_parse_attribs(parser,attribs,_attribs);
+ free(attribs);
+ if(n_attrib < 0) {
+ mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing element %s attributes",parser->line,element);
+ free(element);
+ free(body);
+ return -1;
+ }
+ } else
+ *_attribs = NULL;
+
+ *_element = element;
+ *_body = body;
+
+ parser->last_body = body;
+ parser->ret_stack_size++;
+ parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t));
+ if(parser->ret_stack_size > 1)
+ memmove(parser->ret_stack+1,parser->ret_stack,(parser->ret_stack_size-1)*sizeof(ASX_LineSave_t));
+ parser->ret_stack[0].buffer = ret;
+ parser->ret_stack[0].line = ret_line;
+ parser->line = body ? body_line : ret_line;
+
+ *_buffer = ret;
+ return 1;
+
+}
+
+static void
+asx_parse_ref(ASX_Parser_t* parser, char** attribs) {
+ char *href;
+
+ href = asx_get_attrib("HREF",attribs);
+ if(href == NULL) {
+ asx_warning_attrib_required(parser,"REF" ,"HREF" );
+ return;
+ }
+#if 0
+ // replace http my mmshttp to avoid infinite loops
+ // disabled since some playlists for e.g. WinAMP use asx as well
+ // "-user-agent NSPlayer/4.1.0.3856" is a possible workaround
+ if (strncmp(href, "http://", 7) == 0) {
+ char *newref = malloc(3 + strlen(href) + 1);
+ strcpy(newref, "mms");
+ strcpy(newref + 3, href);
+ free(href);
+ href = newref;
+ }
+#endif
+
+ playlist_add_file(parser->pl, href);
+
+ mp_msg(MSGT_PLAYTREE,MSGL_V,"Adding file %s to element entry\n",href);
+
+ free(href);
+
+}
+
+static void asx_parse_entryref(ASX_Parser_t* parser,char* buffer,char** _attribs) {
+ char *href;
+ stream_t* stream;
+ int f=DEMUXER_TYPE_UNKNOWN;
+
+ if(parser->deep > 0)
+ return;
+
+ href = asx_get_attrib("HREF",_attribs);
+ if(href == NULL) {
+ asx_warning_attrib_required(parser,"ENTRYREF" ,"HREF" );
+ return;
+ }
+ stream=open_stream(href,0,&f);
+ if(!stream) {
+ mp_msg(MSGT_PLAYTREE,MSGL_WARN,"Can't open playlist %s\n",href);
+ free(href);
+ return;
+ }
+
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"Not recursively loading playlist %s\n",href);
+
+ free_stream(stream);
+ free(href);
+ //mp_msg(MSGT_PLAYTREE,MSGL_INFO,"Need to implement entryref\n");
+}
+
+static void asx_parse_entry(ASX_Parser_t* parser,char* buffer,char** _attribs) {
+ char *element,*body,**attribs;
+ int r;
+
+ while(buffer && buffer[0] != '\0') {
+ r = asx_get_element(parser,&buffer,&element,&body,&attribs);
+ if(r < 0) {
+ asx_warning_body_parse_error(parser,"ENTRY");
+ return;
+ } else if (r == 0) { // No more element
+ break;
+ }
+ if(strcasecmp(element,"REF") == 0) {
+ asx_parse_ref(parser,attribs);
+ mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to entry\n",element);
+ } else
+ mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
+ free(body);
+ asx_free_attribs(attribs);
+ }
+
+}
+
+
+static void asx_parse_repeat(ASX_Parser_t* parser,char* buffer,char** _attribs) {
+ char *element,*body,**attribs;
+ int r;
+
+ asx_get_attrib("COUNT",_attribs);
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"Ignoring repeated playlist entries\n");
+
+ while(buffer && buffer[0] != '\0') {
+ r = asx_get_element(parser,&buffer,&element,&body,&attribs);
+ if(r < 0) {
+ asx_warning_body_parse_error(parser,"REPEAT");
+ return;
+ } else if (r == 0) { // No more element
+ break;
+ }
+ if(strcasecmp(element,"ENTRY") == 0) {
+ asx_parse_entry(parser,body,attribs);
+ } else if(strcasecmp(element,"ENTRYREF") == 0) {
+ asx_parse_entryref(parser,body,attribs);
+ } else if(strcasecmp(element,"REPEAT") == 0) {
+ asx_parse_repeat(parser,body,attribs);
+ } else
+ mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
+ free(body);
+ asx_free_attribs(attribs);
+ }
+
+}
+
+
+bool asx_parse(char* buffer, struct playlist *pl)
+{
+ char *element,*asx_body,**asx_attribs,*body = NULL, **attribs;
+ int r;
+ ASX_Parser_t* parser = asx_parser_new(pl);
+
+ parser->line = 1;
+ parser->deep = 0;
+
+ r = asx_get_element(parser,&buffer,&element,&asx_body,&asx_attribs);
+ if(r < 0) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : Syntax error ???",parser->line);
+ asx_parser_free(parser);
+ return false;
+ } else if(r == 0) { // No contents
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"empty asx element");
+ asx_parser_free(parser);
+ return false;
+ }
+
+ if(strcasecmp(element,"ASX") != 0) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"first element isn't ASX, it's %s\n",element);
+ asx_free_attribs(asx_attribs);
+ asx_parser_free(parser);
+ return false;
+ }
+
+ if(!asx_body) {
+ mp_msg(MSGT_PLAYTREE,MSGL_ERR,"ASX element is empty");
+ asx_free_attribs(asx_attribs);
+ asx_parser_free(parser);
+ return false;
+ }
+
+ buffer = asx_body;
+ while(buffer && buffer[0] != '\0') {
+ r = asx_get_element(parser,&buffer,&element,&body,&attribs);
+ if(r < 0) {
+ asx_warning_body_parse_error(parser,"ASX");
+ asx_parser_free(parser);
+ return false;
+ } else if (r == 0) { // No more element
+ break;
+ }
+ if(strcasecmp(element,"ENTRY") == 0) {
+ asx_parse_entry(parser,body,attribs);
+ } else if(strcasecmp(element,"ENTRYREF") == 0) {
+ asx_parse_entryref(parser,body,attribs);
+ } else if(strcasecmp(element,"REPEAT") == 0) {
+ asx_parse_repeat(parser,body,attribs);
+ } else
+ mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
+ free(body);
+ asx_free_attribs(attribs);
+ }
+
+ free(asx_body);
+ asx_free_attribs(asx_attribs);
+ asx_parser_free(parser);
+ return true;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:23:25 +0000