edify extensions for OTA package installation, part 2
Adds more edify functions for OTAs:
is_mounted getprop apply_patch apply_patch_check apply_patch_space
write_raw_image write_firmware_image package_extract_file
This allows us to install radios, hboots, boot images, and install
incremental OTA packages.
Fixes a couple of dumb bugs in edify itself:
- we were doubling the size of the function table each time it was
*not* full, rather than each time it was full
- "no such function" errors weren't visible to the parser, so they
didn't prevent execution of the script.
This commit is contained in:
Doug Zongker
parent
9dbc027b5f
commit
8edb00c990
@ -283,7 +283,7 @@ static int fn_size = 0;
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NamedFunction* fn_table = NULL;
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void RegisterFunction(const char* name, Function fn) {
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if (fn_entries <= fn_size) {
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if (fn_entries >= fn_size) {
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fn_size = fn_size*2 + 1;
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fn_table = realloc(fn_table, fn_size * sizeof(NamedFunction));
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}
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@ -153,10 +153,11 @@ int main(int argc, char** argv) {
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buffer[size] = '\0';
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Expr* root;
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int error_count = 0;
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yy_scan_bytes(buffer, size);
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int error = yyparse(&root);
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printf("parse returned %d\n", error);
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if (error == 0) {
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int error = yyparse(&root, &error_count);
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printf("parse returned %d; %d errors encountered\n", error, error_count);
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if (error == 0 || error_count > 0) {
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char* result = Evaluate(NULL, root);
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if (result == NULL) {
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char* errmsg = GetError();
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@ -25,8 +25,8 @@
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extern int gLine;
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extern int gColumn;
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void yyerror(Expr** root, const char* s);
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int yyparse(Expr** root);
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void yyerror(Expr** root, int* error_count, const char* s);
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int yyparse(Expr** root, int* error_count);
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%}
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@ -45,6 +45,7 @@ int yyparse(Expr** root);
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%type <args> arglist
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%parse-param {Expr** root}
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%parse-param {int* error_count}
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%error-verbose
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/* declarations in increasing order of precedence */
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@ -86,7 +87,7 @@ expr: STRING {
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if ($$->fn == NULL) {
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char buffer[256];
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snprintf(buffer, sizeof(buffer), "unknown function \"%s\"", $1);
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yyerror(root, buffer);
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yyerror(root, error_count, buffer);
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YYERROR;
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}
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$$->name = $1;
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@ -113,9 +114,10 @@ arglist: /* empty */ {
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%%
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void yyerror(Expr** root, const char* s) {
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void yyerror(Expr** root, int* error_count, const char* s) {
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if (strlen(s) == 0) {
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s = "syntax error";
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}
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printf("line %d col %d: %s\n", gLine, gColumn, s);
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++*error_count;
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}
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@ -124,7 +124,8 @@ handle_firmware_update(char* type, char* filename) {
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return INSTALL_ERROR;
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}
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LOGI("type is [%s]\n", type);
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LOGI("type is %s; size is %d; file is %s\n",
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type, (int)st_data.st_size, filename);
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char* data = malloc(st_data.st_size);
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if (data == NULL) {
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@ -13,7 +13,8 @@ include $(CLEAR_VARS)
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LOCAL_SRC_FILES := $(updater_src_files)
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LOCAL_STATIC_LIBRARIES := libedify libmtdutils libminzip libz
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LOCAL_STATIC_LIBRARIES := libapplypatch libedify libmtdutils libminzip libz
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LOCAL_STATIC_LIBRARIES += libmincrypt libbz
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LOCAL_STATIC_LIBRARIES += libcutils libstdc++ libc
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LOCAL_C_INCLUDES += $(LOCAL_PATH)/..
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@ -24,6 +24,8 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include "cutils/misc.h"
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#include "cutils/properties.h"
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#include "edify/expr.h"
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#include "minzip/DirUtil.h"
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#include "mtdutils/mounts.h"
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@ -40,6 +42,7 @@ char* ErrorAbort(void* cookie, char* format, ...) {
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return NULL;
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}
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// mount(type, location, mount_point)
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//
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// what: type="MTD" location="<partition>" to mount a yaffs2 filesystem
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@ -104,6 +107,36 @@ done:
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return result;
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}
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// is_mounted(mount_point)
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char* IsMountedFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 1) {
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return ErrorAbort(cookie, "%s() expects 1 arg, got %d", name, argc);
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}
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char* mount_point;
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if (ReadArgs(cookie, argv, 1, &mount_point) < 0) {
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return NULL;
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}
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if (strlen(mount_point) == 0) {
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ErrorAbort(cookie, "mount_point argument to unmount() can't be empty");
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goto done;
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}
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scan_mounted_volumes();
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const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
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if (vol == NULL) {
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result = strdup("");
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} else {
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result = mount_point;
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}
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done:
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if (result != mount_point) free(mount_point);
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return result;
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}
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char* UnmountFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 1) {
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@ -132,6 +165,8 @@ done:
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if (result != mount_point) free(mount_point);
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return result;
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}
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// format(type, location)
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//
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// type="MTD" location=partition
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@ -192,6 +227,7 @@ done:
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return result;
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}
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char* DeleteFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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char** paths = malloc(argc * sizeof(char*));
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int i;
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@ -222,6 +258,7 @@ char* DeleteFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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return strdup(buffer);
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}
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char* ShowProgressFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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if (argc != 2) {
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return ErrorAbort(cookie, "%s() expects 2 args, got %d", name, argc);
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@ -243,8 +280,9 @@ char* ShowProgressFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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return strdup("");
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}
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// package_extract package_path destination_path
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char* PackageExtractFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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// package_extract_dir(package_path, destination_path)
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char* PackageExtractDirFn(const char* name, void* cookie,
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int argc, Expr* argv[]) {
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if (argc != 2) {
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return ErrorAbort(cookie, "%s() expects 2 args, got %d", name, argc);
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}
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@ -265,6 +303,42 @@ char* PackageExtractFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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return strdup(success ? "t" : "");
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}
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// package_extract_file(package_path, destination_path)
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char* PackageExtractFileFn(const char* name, void* cookie,
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int argc, Expr* argv[]) {
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if (argc != 2) {
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return ErrorAbort(cookie, "%s() expects 2 args, got %d", name, argc);
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}
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char* zip_path;
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char* dest_path;
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if (ReadArgs(cookie, argv, 2, &zip_path, &dest_path) < 0) return NULL;
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bool success = false;
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ZipArchive* za = ((UpdaterInfo*)cookie)->package_zip;
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const ZipEntry* entry = mzFindZipEntry(za, zip_path);
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if (entry == NULL) {
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fprintf(stderr, "%s: no %s in package\n", name, zip_path);
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goto done;
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}
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FILE* f = fopen(dest_path, "wb");
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if (f == NULL) {
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fprintf(stderr, "%s: can't open %s for write: %s\n",
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name, dest_path, strerror(errno));
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goto done;
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}
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success = mzExtractZipEntryToFile(za, entry, fileno(f));
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fclose(f);
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done:
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free(zip_path);
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free(dest_path);
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return strdup(success ? "t" : "");
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}
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// symlink target src1 src2 ...
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char* SymlinkFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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if (argc == 0) {
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@ -289,6 +363,7 @@ char* SymlinkFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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return strdup("");
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}
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char* SetPermFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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char* result = NULL;
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bool recursive = (strcmp(name, "set_perm_recursive") == 0);
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@ -356,15 +431,209 @@ done:
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return result;
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}
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char* GetPropFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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if (argc != 1) {
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return ErrorAbort(cookie, "%s() expects 1 arg, got %d", name, argc);
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}
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char* key;
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key = Evaluate(cookie, argv[0]);
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if (key == NULL) return NULL;
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char value[PROPERTY_VALUE_MAX];
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property_get(key, value, "");
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free(key);
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return strdup(value);
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}
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static bool write_raw_image_cb(const unsigned char* data,
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int data_len, void* ctx) {
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int r = mtd_write_data((MtdWriteContext*)ctx, (const char *)data, data_len);
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if (r == data_len) return true;
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fprintf(stderr, "%s\n", strerror(errno));
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return false;
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}
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// write_raw_image(file, partition)
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char* WriteRawImageFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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char* result = NULL;
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char* partition;
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char* filename;
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if (ReadArgs(cookie, argv, 2, &filename, &partition) < 0) {
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return NULL;
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}
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if (strlen(partition) == 0) {
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ErrorAbort(cookie, "partition argument to %s can't be empty", name);
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goto done;
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}
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if (strlen(filename) == 0) {
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ErrorAbort(cookie, "file argument to %s can't be empty", name);
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goto done;
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}
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mtd_scan_partitions();
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const MtdPartition* mtd = mtd_find_partition_by_name(partition);
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if (mtd == NULL) {
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fprintf(stderr, "%s: no mtd partition named \"%s\"\n", name, partition);
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result = strdup("");
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goto done;
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}
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MtdWriteContext* ctx = mtd_write_partition(mtd);
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if (ctx == NULL) {
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fprintf(stderr, "%s: can't write mtd partition \"%s\"\n",
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name, partition);
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result = strdup("");
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goto done;
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}
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bool success;
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FILE* f = fopen(filename, "rb");
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if (f == NULL) {
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fprintf(stderr, "%s: can't open %s: %s\n",
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name, filename, strerror(errno));
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result = strdup("");
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goto done;
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}
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success = true;
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char* buffer = malloc(BUFSIZ);
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int read;
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while (success && (read = fread(buffer, 1, BUFSIZ, f)) > 0) {
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int wrote = mtd_write_data(ctx, buffer, read);
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success = success && (wrote == read);
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if (!success) {
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fprintf(stderr, "mtd_write_data to %s failed: %s\n",
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partition, strerror(errno));
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}
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}
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free(buffer);
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fclose(f);
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printf("%s %s partition from %s\n",
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success ? "wrote" : "failed to write", partition, filename);
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result = success ? partition : strdup("");
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done:
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if (result != partition) free(partition);
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free(filename);
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return result;
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}
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// write_firmware_image(file, partition)
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//
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// partition is "radio" or "hboot"
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// file is not used until after updater exits
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//
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// TODO: this should live in some HTC-specific library
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char* WriteFirmwareImageFn(const char* name, void* cookie,
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int argc, Expr* argv[]) {
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char* result = NULL;
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char* partition;
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char* filename;
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if (ReadArgs(cookie, argv, 2, &filename, &partition) < 0) {
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return NULL;
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}
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if (strlen(partition) == 0) {
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ErrorAbort(cookie, "partition argument to %s can't be empty", name);
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goto done;
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}
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if (strlen(filename) == 0) {
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ErrorAbort(cookie, "file argument to %s can't be empty", name);
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goto done;
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}
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FILE* cmd = ((UpdaterInfo*)cookie)->cmd_pipe;
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fprintf(cmd, "firmware %s %s\n", partition, filename);
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printf("will write %s firmware from %s\n", partition, filename);
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result = partition;
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done:
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if (result != partition) free(partition);
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free(filename);
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return result;
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}
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extern int applypatch(int argc, char** argv);
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// apply_patch(srcfile, tgtfile, tgtsha1, tgtsize, sha1:patch, ...)
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// apply_patch_check(file, sha1, ...)
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// apply_patch_space(bytes)
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char* ApplyPatchFn(const char* name, void* cookie, int argc, Expr* argv[]) {
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printf("in applypatchfn (%s)\n", name);
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char* prepend = NULL;
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if (strstr(name, "check") != NULL) {
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prepend = "-c";
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} else if (strstr(name, "space") != NULL) {
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prepend = "-s";
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}
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char** args = ReadVarArgs(cookie, argc, argv);
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if (args == NULL) return NULL;
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// insert the "program name" argv[0] and a copy of the "prepend"
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// string (if any) at the start of the args.
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int extra = 1 + (prepend != NULL ? 1 : 0);
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char** temp = malloc((argc+extra) * sizeof(char*));
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memcpy(temp+extra, args, argc * sizeof(char*));
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temp[0] = strdup("updater");
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if (prepend) {
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temp[1] = strdup(prepend);
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}
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free(args);
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args = temp;
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argc += extra;
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printf("calling applypatch\n");
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fflush(stdout);
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int result = applypatch(argc, args);
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printf("applypatch returned %d\n", result);
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int i;
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for (i = 0; i < argc; ++i) {
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free(args[i]);
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}
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free(args);
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switch (result) {
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case 0: return strdup("t");
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case 1: return strdup("");
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default: return ErrorAbort(cookie, "applypatch couldn't parse args");
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}
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}
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void RegisterInstallFunctions() {
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RegisterFunction("mount", MountFn);
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RegisterFunction("is_mounted", IsMountedFn);
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RegisterFunction("unmount", UnmountFn);
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RegisterFunction("format", FormatFn);
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RegisterFunction("show_progress", ShowProgressFn);
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RegisterFunction("delete", DeleteFn);
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RegisterFunction("delete_recursive", DeleteFn);
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RegisterFunction("package_extract", PackageExtractFn);
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RegisterFunction("package_extract_dir", PackageExtractDirFn);
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RegisterFunction("package_extract_file", PackageExtractFileFn);
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RegisterFunction("symlink", SymlinkFn);
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RegisterFunction("set_perm", SetPermFn);
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RegisterFunction("set_perm_recursive", SetPermFn);
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RegisterFunction("getprop", GetPropFn);
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RegisterFunction("write_raw_image", WriteRawImageFn);
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RegisterFunction("write_firmware_image", WriteFirmwareImageFn);
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RegisterFunction("apply_patch", ApplyPatchFn);
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RegisterFunction("apply_patch_check", ApplyPatchFn);
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RegisterFunction("apply_patch_space", ApplyPatchFn);
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}
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@ -80,10 +80,11 @@ int main(int argc, char** argv) {
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// Parse the script.
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Expr* root;
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int error_count = 0;
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yy_scan_string(script);
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int error = yyparse(&root);
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if (error != 0) {
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fprintf(stderr, "%d parse errors\n", error);
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int error = yyparse(&root, &error_count);
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if (error != 0 || error_count > 0) {
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fprintf(stderr, "%d parse errors\n", error_count);
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return 6;
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}
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