native_spawn_argv.c

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/**
 * @file
 * @brief Builds the argv vector used to launch an app entrypoint for an incoming HTTP request.
 */
 
#include "native_spawn_argv.h"
 
#include <stddef.h>
 
static int push_argv_value(char *argv_list[], size_t argv_capacity, size_t *argc_io, char *value) {
  if (argv_list == NULL || argc_io == NULL) {
    return 69;
  }
  if (*argc_io + 1 >= argv_capacity) {
    return 69;
  }
  argv_list[*argc_io] = value;
  (*argc_io)++;
  return 0;
}
 
int build_native_app_request_argv(
  const AppRuntime *app,
  const char *request_method,
  const char *request_target,
  const char *request_cookie,
  const char *request_headers,
  const char *request_content_type,
  const char *request_body,
  int request_is_multipart,
  const char *temp_body_path,
  char *argv_list[],
  size_t argv_capacity,
  size_t *argc_out
) {
  size_t argc = 0;
  if (argc_out != NULL) {
    *argc_out = 0;
  }
  if (app == NULL || argv_list == NULL || argc_out == NULL || argv_capacity == 0) {
    return 69;
  }
  if (app->compiled_entrypoint == NULL || app->build_dir == NULL || request_method == NULL || request_target == NULL) {
    return 69;
  }
  if (push_argv_value(argv_list, argv_capacity, &argc, app->compiled_entrypoint) != 0) {
    return 69;
  }
  if ((app->build_dir != NULL && app->build_dir[0] != '\0' &&
       (push_argv_value(argv_list, argv_capacity, &argc, "--build-dir") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, app->build_dir) != 0)) ||
      (app->state_path != NULL && app->state_path[0] != '\0' &&
       (push_argv_value(argv_list, argv_capacity, &argc, "--state-path") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, app->state_path) != 0)) ||
      (app->base_path != NULL &&
       (push_argv_value(argv_list, argv_capacity, &argc, "--base-path") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, app->base_path) != 0)) ||
      (app->log_path != NULL && app->log_path[0] != '\0' &&
       (push_argv_value(argv_list, argv_capacity, &argc, "--log-path") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, app->log_path) != 0)) ||
      (app->debug != NULL && app->debug[0] != '\0' &&
       (push_argv_value(argv_list, argv_capacity, &argc, "--debug") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, app->debug) != 0)) ||
      push_argv_value(argv_list, argv_capacity, &argc, "--request") != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, (char *)request_method) != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, (char *)request_target) != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, "--cookie") != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, (char *)(request_cookie != NULL ? request_cookie : "")) != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, "--headers") != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, (char *)(request_headers != NULL ? request_headers : "")) != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, "--content-type") != 0 ||
      push_argv_value(argv_list, argv_capacity, &argc, (char *)(request_content_type != NULL ? request_content_type : "application/x-www-form-urlencoded")) != 0) {
    return 69;
  }
  if (temp_body_path != NULL && temp_body_path[0] != '\0') {
    if (push_argv_value(argv_list, argv_capacity, &argc, "--body-file") != 0 ||
        push_argv_value(argv_list, argv_capacity, &argc, (char *)temp_body_path) != 0) {
      return 69;
    }
  }
  (void)request_body;
  (void)request_is_multipart;
  if (argc >= argv_capacity) {
    return 69;
  }
  argv_list[argc] = NULL;
  *argc_out = argc;
  return 0;
}