143 lines
2.6 KiB
C
143 lines
2.6 KiB
C
/*
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* e_loop helper program
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* Copyright (c) 2015, Qualcomm Atheros, Inc.
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* All Rights Reserved.
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* Licensed under the Clear BSD license. See README for more details.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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char *e_loop_cmd_file = "/data/local/hs2/To_Phone/tag_file";
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char *e_loop_log_file = "/data/local/hs2/To_Phone/Logs/e_loop.log";
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static const char *log_file = NULL;
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static const char *tag_file = NULL;
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int main(int argc, char *argv[])
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{
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char *buf = NULL;
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char *cmd = NULL;
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long pos;
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int c, ret;
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size_t len = 0;
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FILE *f, *f2 = NULL;
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/* Set the defaults */
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log_file = e_loop_log_file;
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tag_file = e_loop_cmd_file;
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for (;;) {
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c = getopt(argc, argv, "l:t:");
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if (c < 0)
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break;
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switch (c) {
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case 'l':
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log_file = optarg;
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break;
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case 't':
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tag_file = optarg;
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break;
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default:
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printf("usage: e_loop [-l<log_filename>] [-t<tag_filename>]\n");
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exit(0);
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break;
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}
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}
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/* Main command event loop */
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while (1) {
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/* Wait for a tag_file with a command to process */
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while (!(f = fopen(tag_file, "rb")))
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sleep(1);
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len = 80;
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/* Figure out how long the file is */
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if (fseek(f, 0, SEEK_END) < 0 || (pos = ftell(f)) < 0) {
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fclose(f);
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return -1;
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}
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len = pos;
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if (fseek(f, 0, SEEK_SET) < 0) {
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fclose(f);
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return -1;
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}
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buf = malloc(len);
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if (!buf)
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return -1;
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/* Read up the command line */
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if (fread(buf, 1, len, f) != len) {
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fclose(f);
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free(buf);
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return -1;
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}
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fclose(f);
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buf[len - 1] = '\0';
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if (log_file) {
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len = strlen(buf) + strlen(log_file) + 7;
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cmd = malloc(len);
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if (cmd == NULL) {
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free(buf);
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return -1;
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}
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ret = snprintf(cmd, len, "%s > %s", buf, log_file);
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if (ret < 0 || (size_t) ret >= len) {
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free(buf);
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free(cmd);
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return -1;
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}
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free(buf);
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buf = NULL;
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} else {
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cmd = buf;
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}
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cmd[len - 1] = '\0';
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/*
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* This string "cmd" will contain the command passed in by
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* hs20-action.sh. And the name of the "logfile". Which can be
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* monitored for the result.
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*/
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ret = system(cmd);
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if (WIFEXITED(ret)) {
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ret = WEXITSTATUS(ret);
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}
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if ((f2 = fopen(log_file, "a")) == NULL) {
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free(cmd);
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return -1;
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}
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if (fprintf(f2,"\nELOOP_CMD : %s\n", cmd) <= 0) {
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fclose(f2);
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free(cmd);
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return -1;
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}
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if (fprintf(f2,"\nELOOP_CMD_STATUS : %d\n", ret) <= 0) {
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fclose(f2);
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free(cmd);
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return -1;
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}
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/* Only free the cmd buffer. It is all that is left allocated */
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free(cmd);
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fclose(f2);
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/* Clean up */
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unlink(tag_file);
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}
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return ret;
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}
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