openwrt-xburst/package/busybox/patches/524-memory_usage.patch

--- a/archival/libipkg/pkg.c
+++ b/archival/libipkg/pkg.c
@@ -224,8 +224,7 @@
      if (err) { return err; }
 
      rewind(control_file);
-     raw = read_raw_pkgs_from_stream(control_file);
-     pkg_parse_raw(pkg, &raw, NULL, NULL);
+	 pkg_parse_stream(pkg, control_file, NULL, NULL);
 
      fclose(control_file);
 
--- a/archival/libipkg/pkg_hash.c
+++ b/archival/libipkg/pkg_hash.c
@@ -89,20 +89,20 @@
 			   pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 {
      hash_table_t *hash = &conf->pkg_hash;
-     char **raw;
-     char **raw_start;
+     FILE *fp;
      pkg_t *pkg;
     
-     raw = raw_start = read_raw_pkgs_from_file(file_name);
-     if (!raw)
-        return -ENOMEM;
+     if(!(fp = fopen(file_name, "r"))){
+	  fprintf(stderr, "can't get %s open for read\n", file_name);
+	  return NULL;
+     }
 
-     while(*raw){         /* don't worry, we'll increment raw in the parsing function */
+     while(!feof(fp)) {         /* don't worry, we'll increment raw in the parsing function */
 	  pkg = pkg_new();
 	  if (!pkg)
 	       return -ENOMEM;
 
-	  if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
+	  if (pkg_parse_stream(pkg, fp, src, dest) == 0) {
 	       if (!pkg->architecture) {
 		    char *version_str = pkg_version_str_alloc(pkg);
 		    pkg->architecture = pkg_get_default_arch(conf);
@@ -116,13 +116,6 @@
 	  }
      }
 
-     /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
-	memory after read_raw_pkgs_from_file */
-     raw = raw_start;
-     while (*raw) {
-	  free(*raw++);
-     }
-     free(raw_start);
      return 0;
 }
 
--- a/archival/libipkg/pkg_parse.c
+++ b/archival/libipkg/pkg_parse.c
@@ -224,6 +224,161 @@
    Enhances, perhaps we could generalize all of these and save some
    code duplication.
 */
+int pkg_parse_stream(pkg_t *pkg, FILE *stream, pkg_src_t *src, pkg_dest_t *dest)
+{
+    int reading_conffiles, reading_description;
+    int pkg_false_provides=1;
+    char ** lines;
+    char *provide=NULL;
+    char *buf, *scout;
+    int count = 0;
+    size_t size = 512;
+
+    buf = malloc (size);
+
+    pkg->src = src;
+    pkg->dest = dest;
+
+    reading_conffiles = reading_description = 0;
+
+    while (fgets(buf, size, stream)) {
+	  while (strlen (buf) == (size - 1)
+		 && buf[size-2] != '\n') {
+	       size_t o = size - 1;
+	       size *= 2;
+	       buf = realloc (buf, size);
+	       if (fgets (buf + o, size - o, stream) == NULL)
+		    break;
+	  }
+
+	  if((scout = strchr(buf, '\n')))
+	       *scout = '\0';
+
+	  lines = &buf;
+	/*	fprintf(stderr, "PARSING %s\n", *lines);*/
+	if(isGenericFieldType("Package:", *lines)) 
+	    pkg->name = parseGenericFieldType("Package", *lines);
+	else if(isGenericFieldType("Architecture:", *lines))
+	    pkg->architecture = parseGenericFieldType("Architecture", *lines);
+	else if(isGenericFieldType("Filename:", *lines))
+	    pkg->filename = parseGenericFieldType("Filename", *lines);
+	else if(isGenericFieldType("Section:", *lines))
+	    pkg->section = parseGenericFieldType("Section", *lines);
+	else if(isGenericFieldType("MD5sum:", *lines))
+	    pkg->md5sum = parseGenericFieldType("MD5sum", *lines);
+	/* The old ipkg wrote out status files with the wrong case for MD5sum,
+	   let's parse it either way */
+	else if(isGenericFieldType("MD5Sum:", *lines))
+	    pkg->md5sum = parseGenericFieldType("MD5Sum", *lines);
+	else if(isGenericFieldType("Size:", *lines))
+	    pkg->size = parseGenericFieldType("Size", *lines);
+	else if(isGenericFieldType("Source:", *lines))
+	    pkg->source = parseGenericFieldType("Source", *lines);
+	else if(isGenericFieldType("Installed-Size:", *lines))
+	    pkg->installed_size = parseGenericFieldType("Installed-Size", *lines);
+	else if(isGenericFieldType("Installed-Time:", *lines)) {
+	     char *time_str = parseGenericFieldType("Installed-Time", *lines);
+	     pkg->installed_time = strtoul(time_str, NULL, 0);
+	} else if(isGenericFieldType("Priority:", *lines))
+	    pkg->priority = parseGenericFieldType("Priority", *lines);
+	else if(isGenericFieldType("Essential:", *lines)) {
+	    char *essential_value;
+	    essential_value = parseGenericFieldType("Essential", *lines);
+	    if (strcmp(essential_value, "yes") == 0) {
+		pkg->essential = 1;
+	    }
+	    free(essential_value);
+	}
+	else if(isGenericFieldType("Status", *lines))
+	    parseStatus(pkg, *lines);
+	else if(isGenericFieldType("Version", *lines))
+	    parseVersion(pkg, *lines);
+	else if(isGenericFieldType("Maintainer", *lines))
+	    pkg->maintainer = parseGenericFieldType("Maintainer", *lines);
+	else if(isGenericFieldType("Conffiles", *lines)){
+	    parseConffiles(pkg, *lines);
+	    reading_conffiles = 1;
+	}
+	else if(isGenericFieldType("Description", *lines)) {
+	    pkg->description = parseGenericFieldType("Description", *lines);
+	    reading_conffiles = 0;
+	    reading_description = 1;
+	}
+
+	else if(isGenericFieldType("Provides", *lines)){
+/* Here we add the internal_use to align the off by one problem between provides_str and provides */
+            provide = (char * ) malloc(strlen(*lines)+ 35 ); /* Preparing the space for the new ipkg_internal_use_only */
+            if ( alterProvidesLine(*lines,provide) ){
+               return EINVAL;
+            }
+	    pkg->provides_str = parseDependsString( provide, &pkg->provides_count);
+/* Let's try to hack a bit here.
+   The idea is that if a package has no Provides, we would add one generic, to permit the check of dependencies
+   in alot of other places. We will remove it before writing down the status database */
+            pkg_false_provides=0;
+            free(provide);
+        } 
+
+	else if(isGenericFieldType("Depends", *lines))
+	    pkg->depends_str = parseDependsString(*lines, &pkg->depends_count);
+	else if(isGenericFieldType("Pre-Depends", *lines))
+	    pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count);
+	else if(isGenericFieldType("Recommends", *lines))
+	    pkg->recommends_str = parseDependsString(*lines, &pkg->recommends_count);
+	else if(isGenericFieldType("Suggests", *lines))
+	    pkg->suggests_str = parseDependsString(*lines, &pkg->suggests_count);
+	/* Abhaya: support for conflicts */
+	else if(isGenericFieldType("Conflicts", *lines))
+	    pkg->conflicts_str = parseDependsString(*lines, &pkg->conflicts_count);
+	else if(isGenericFieldType("Replaces", *lines))
+	    pkg->replaces_str = parseDependsString(*lines, &pkg->replaces_count);
+	else if(line_is_blank(*lines)) {
+	    break;
+	}
+	else if(**lines == ' '){
+	    if(reading_description) {
+		/* we already know it's not blank, so the rest of description */      
+		pkg->description = realloc(pkg->description,
+					   strlen(pkg->description)
+					   + 1 + strlen(*lines) + 1);
+		strcat(pkg->description, "\n");
+		strcat(pkg->description, (*lines));
+	    }
+	    else if(reading_conffiles)
+		parseConffiles(pkg, *lines);
+	}
+    }
+/* If the ipk has not a Provides line, we insert our false line */ 
+    if ( pkg_false_provides==1)
+       pkg->provides_str = parseDependsString ((char *)"Provides: ipkg_internal_use_only ", &pkg->provides_count);
+
+    free(buf);
+    if (pkg->name) {
+	return 0;
+    } else {
+	return EINVAL;
+    }
+}
+
+#if 0
+
+/* Some random thoughts from Carl:
+
+   This function could be considerably simplified if we just kept
+   an array of all the generic string-valued field names, and looped
+   through those looking for a match. Also, these fields could perhaps
+   be stored in the package as an array as well, (or, probably better,
+   as an nv_pair_list_t).
+
+   Fields which require special parsing or storage, (such as Depends:
+   and Status:) could be handled as they are now. 
+*/
+/* XXX: FEATURE: The Suggests: field needs to be changed from a string
+   to a dependency list. And, since we already have
+   Depends/Pre-Depends and need to add Conflicts, Recommends, and
+   Enhances, perhaps we could generalize all of these and save some
+   code duplication.
+*/
 int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 {
     int reading_conffiles, reading_description;
@@ -342,6 +497,7 @@
 	return EINVAL;
     }
 }
+#endif
 
 int pkg_valorize_other_field(pkg_t *pkg, char ***raw)
 {
--- a/archival/libipkg/pkg_parse.h
+++ b/archival/libipkg/pkg_parse.h
@@ -25,7 +25,10 @@
 char ** parseDependsString(char * raw, int * depends_count);
 int parseVersion(pkg_t *pkg, char *raw);
 void parseConffiles(pkg_t * pkg, char * raw);
+#if 0
 int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest);
+#endif
+int pkg_parse_stream(pkg_t *pkg, FILE *stream, pkg_src_t *src, pkg_dest_t *dest);
 int pkg_valorize_other_field(pkg_t *pkg, char ***raw);
 
 #endif