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Refactor patch_content code

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This commit is contained in:
twinaphex 2015-02-16 02:12:22 +01:00
parent 50c546cfb9
commit 0d8fd70b58
1 changed files with 92 additions and 62 deletions
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154
content.c
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@ -41,71 +41,18 @@
#endif
#endif
/**
* patch_content:
* @buf : buffer of the content file.
* @size : size of the content file.
*
* Apply patch to the content file in-memory.
*
**/
static void patch_content(uint8_t **buf, ssize_t *size)
static bool apply_patch_content(uint8_t *ret_buf, uint8_t **buf,
ssize_t *size, const char *patch_desc, const char *patch_path,
patch_func_t func, void *patch_data, ssize_t *patch_size)
{
size_t target_size;
uint8_t *ret_buf = *buf;
patch_error_t err = PATCH_UNKNOWN;
bool success = false;
uint8_t *patched_content = NULL;
ssize_t ret_size = *size;
uint8_t *patched_content = NULL;
const char *patch_desc = NULL;
const char *patch_path = NULL;
patch_error_t err = PATCH_UNKNOWN;
patch_func_t func = NULL;
ssize_t patch_size = 0;
void *patch_data = NULL;
bool success = false;
bool allow_bps = !g_extern.ups_pref && !g_extern.ips_pref;
bool allow_ups = !g_extern.bps_pref && !g_extern.ips_pref;
bool allow_ips = !g_extern.ups_pref && !g_extern.bps_pref;
if (g_extern.ups_pref + g_extern.bps_pref + g_extern.ips_pref > 1)
{
RARCH_WARN("Several patches are explicitly defined, ignoring all ...\n");
return;
}
if (allow_ups && *g_extern.ups_name
&& (patch_size = read_file(g_extern.ups_name, &patch_data)) >= 0)
{
patch_desc = "UPS";
patch_path = g_extern.ups_name;
func = ups_apply_patch;
}
else if (allow_bps && *g_extern.bps_name
&& (patch_size = read_file(g_extern.bps_name, &patch_data)) >= 0)
{
patch_desc = "BPS";
patch_path = g_extern.bps_name;
func = bps_apply_patch;
}
else if (allow_ips && *g_extern.ips_name
&& (patch_size = read_file(g_extern.ips_name, &patch_data)) >= 0)
{
patch_desc = "IPS";
patch_path = g_extern.ips_name;
func = ips_apply_patch;
}
else
{
RARCH_LOG("Did not find a valid content patch.\n");
return;
}
if (!path_file_exists(patch_path))
return;
return false;
RARCH_LOG("Found %s file in \"%s\", attempting to patch ...\n",
patch_desc, patch_path);
@ -120,7 +67,7 @@ static void patch_content(uint8_t **buf, ssize_t *size)
goto error;
}
err = func((const uint8_t*)patch_data, patch_size, ret_buf,
err = func((const uint8_t*)patch_data, *patch_size, ret_buf,
ret_size, patched_content, &target_size);
if (err == PATCH_SUCCESS)
@ -140,12 +87,95 @@ static void patch_content(uint8_t **buf, ssize_t *size)
}
free(patch_data);
return;
return true;
error:
*buf = ret_buf;
*size = ret_size;
free(patch_data);
return false;
}
static bool try_bps_patch(uint8_t **buf, ssize_t *size)
{
void *patch_data = NULL;
uint8_t *ret_buf = *buf;
ssize_t patch_size = 0;
bool allow_bps = !g_extern.ups_pref && !g_extern.ips_pref;
if (!allow_bps)
return false;
if (g_extern.bps_name[0] == '\0')
return false;
patch_size = read_file(g_extern.bps_name, &patch_data);
if (patch_size < 0)
return false;
return apply_patch_content(ret_buf, buf, size, "BPS", g_extern.bps_name,
bps_apply_patch, patch_data, &patch_size);
}
static bool try_ups_patch(uint8_t **buf, ssize_t *size)
{
void *patch_data = NULL;
uint8_t *ret_buf = *buf;
ssize_t patch_size = 0;
bool allow_ups = !g_extern.bps_pref && !g_extern.ips_pref;
if (!allow_ups)
return false;
if (g_extern.ups_name[0] == '\0')
return false;
patch_size = read_file(g_extern.ups_name, &patch_data);
if (patch_size < 0)
return false;
return apply_patch_content(ret_buf, buf, size, "UPS", g_extern.ups_name,
ups_apply_patch, patch_data, &patch_size);
}
static bool try_ips_patch(uint8_t **buf, ssize_t *size)
{
void *patch_data = NULL;
uint8_t *ret_buf = *buf;
ssize_t patch_size = 0;
bool allow_ips = !g_extern.ups_pref && !g_extern.bps_pref;
if (!allow_ips)
return false;
if (g_extern.ips_name[0] == '\0')
return false;
patch_size = read_file(g_extern.ips_name, &patch_data);
if (patch_size < 0)
return false;
return apply_patch_content(ret_buf, buf, size, "IPS", g_extern.ips_name,
ips_apply_patch, patch_data, &patch_size);
}
/**
* patch_content:
* @buf : buffer of the content file.
* @size : size of the content file.
*
* Apply patch to the content file in-memory.
*
**/
static void patch_content(uint8_t **buf, ssize_t *size)
{
bool allow_ips = !g_extern.ups_pref && !g_extern.bps_pref;
if (g_extern.ups_pref + g_extern.bps_pref + g_extern.ips_pref > 1)
{
RARCH_WARN("Several patches are explicitly defined, ignoring all ...\n");
return;
}
if (!try_ups_patch(buf, size) || !try_bps_patch(buf, size) || !try_ips_patch(buf, size))
{
RARCH_LOG("Did not find a valid content patch.\n");
}
}
/**