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Diffstat (limited to 'content.c')
-rw-r--r--content.c112
1 files changed, 100 insertions, 12 deletions
diff --git a/content.c b/content.c
index b9a3c4a..4215299 100644
--- a/content.c
+++ b/content.c
@@ -1,8 +1,12 @@
#include <dirent.h>
#include <errno.h>
+#include <fcntl.h>
#include <libgen.h>
#include <stdio.h>
#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <unistd.h>
#include "core.h"
#include "content.h"
#include "patch.h"
@@ -73,6 +77,9 @@ static int content_load_zip(struct content *content) {
goto finish;
}
+ if (content->tmpfile)
+ remove(content->tmpfile);
+
free(content->tmpfile);
content->tmpfile = calloc(MAX_PATH, sizeof(*content->tmpfile));
@@ -118,7 +125,7 @@ static int content_patch_compare(const struct dirent **d1, const struct dirent *
return strcasecmp((*d1)->d_name, (*d2)->d_name);
}
-static int content_patch(const struct content *content, void **out, size_t *out_size) {
+static int content_patch(const struct content *content, void *data, size_t size, void **out, size_t *out_size) {
struct dirent **namelist;
char pattern[MAX_PATH];
char patch_path[MAX_PATH];
@@ -126,8 +133,8 @@ static int content_patch(const struct content *content, void **out, size_t *out_
char *path = strdup(content->path);
char *dir;
- const void *in = content->data;
- size_t in_size = content->size;
+ const void *in = data;
+ size_t in_size = size;
void *patch_data = NULL;
size_t patch_size = 0;
void *patched = NULL;
@@ -161,7 +168,7 @@ static int content_patch(const struct content *content, void **out, size_t *out_
}
if (patched) {
- if (in != content->data)
+ if (in != data)
free((void *)in);
in = patched;
@@ -186,7 +193,7 @@ finish:
}
free(namelist);
- if (in != content->data)
+ if (in != data)
free((void *)in);
free(patch_data);
@@ -194,6 +201,82 @@ finish:
return ret;
}
+static int content_patch_file(struct content *content, const char *path) {
+ int fd, outfd;
+ int ret = -1;
+ struct stat stat;
+ void *addr;
+ void *out = NULL;
+ size_t out_size = 0;
+ char *content_path = strdup(content->path);
+ char *content_name;
+ FILE *outfile = NULL;
+
+ fd = open(path, O_RDONLY);
+ if (fd == -1) {
+ PA_ERROR("Couldn't open content file\n");
+ goto finish;
+ }
+
+ if (fstat(fd, &stat) == -1) {
+ PA_ERROR("Couldn't read content file size\n");
+ goto finish;
+ }
+
+ addr = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (addr == MAP_FAILED) {
+ PA_ERROR("Couldn't read content file\n");
+ goto finish;
+ }
+
+ if (content_patch(content, addr, stat.st_size, &out, &out_size)) {
+ goto finish;
+ }
+
+ if (content->tmpfile)
+ remove(content->tmpfile);
+
+ free(content->tmpfile);
+
+ content->tmpfile = calloc(MAX_PATH, sizeof(*content->tmpfile));
+ if (!content->tmpfile) {
+ PA_ERROR("Couldn't allocate memory for patched path\n");
+ goto finish;
+ }
+
+ content_name = basename(content_path);
+ snprintf(content->tmpfile, MAX_PATH, "/tmp/pa-XXXXXX%s", content_name);
+
+ outfd = mkstemps(content->tmpfile, strlen(content_name));
+ outfile = fdopen(outfd, "w");
+ if (!outfile) {
+ PA_ERROR("Error creating temporary file for patching: %s\n", strerror(errno));
+ goto finish;
+ }
+
+ if (out_size != fwrite(out, 1, out_size, outfile)) {
+ PA_ERROR("Error writing file %s: %s\n", path, strerror(errno));
+ goto finish;
+ }
+
+ ret = 0;
+
+finish:
+ if (addr != MAP_FAILED)
+ munmap(addr, stat.st_size);
+
+ if (fd >= 0)
+ close(fd);
+
+ if (outfile)
+ fclose(outfile);
+
+ free(out);
+ free(content_path);
+
+ return ret;
+}
+
struct content *content_init(const char *path) {
struct content* content = calloc(1, sizeof(struct content));
@@ -242,27 +325,32 @@ int content_load_game_info(struct content *content, struct retro_game_info *info
path = content->tmpfile ? content->tmpfile : content->path;
if (needs_fullpath) {
+ content_patch_file(content, path);
+ path = content->tmpfile ? content->tmpfile : content->path;
info->path = path;
} else {
+ void *data = NULL;
+ size_t size = 0;
void *patched_data = NULL;
size_t patched_size = 0;
free(content->data);
+ content->data = NULL;
- if (alloc_readfile(path, &content->data, &content->size)) {
+ if (alloc_readfile(path, &data, &size)) {
PA_ERROR("Error reading content file: %s\n", path);
goto finish;
}
- if (!content_patch(content, &patched_data, &patched_size) && patched_data) {
- free(content->data);
- content->data = patched_data;
- content->size = patched_size;
+ if (!content_patch(content, data, size, &patched_data, &patched_size) && patched_data) {
+ free(data);
+ data = patched_data;
+ size = patched_size;
}
info->path = path;
- info->data = content->data;
- info->size = content->size;
+ info->data = content->data = data;
+ info->size = content->size = size;
}
ret = 0;