native_request_path.c

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/**
 * @file
 * @brief Normalizes request targets by stripping query strings and remapping them under an app mount path.
 */
 
#include "native_request_path.h"
 
#include "native_support.h"
 
#include <stdlib.h>
#include <string.h>
 
#ifdef _WIN32
#define native_request_path_strdup _strdup
#else
#define native_request_path_strdup strdup
#endif
 
char *native_request_path_without_query(const char *target) {
  const char *path = target != NULL ? target : "/";
  const char *query = strchr(path, '?');
  size_t len = query != NULL ? (size_t)(query - path) : strlen(path);
  return dup_range(path, len);
}
 
char *native_request_target_for_mount(const char *mount_path, const char *target) {
  const char *mount = mount_path != NULL ? mount_path : "";
  const char *path = target != NULL ? target : "/";
  const char *query = strchr(path, '?');
  size_t path_len = query != NULL ? (size_t)(query - path) : strlen(path);
  size_t mount_len = strlen(mount);
  const char *trimmed = path;
  char *result;
 
  if (mount_len > 0 && strncmp(path, mount, mount_len) == 0) {
    trimmed = path + mount_len;
    if (*trimmed == '\0') {
      trimmed = "/";
    }
  }
  if (*trimmed == '\0') {
    trimmed = "/";
  }
  if (query != NULL) {
    size_t trimmed_len = path_len - (size_t)(trimmed - path);
    result = (char *)malloc(trimmed_len + strlen(query) + 1);
    if (result == NULL) {
      return NULL;
    }
    memcpy(result, trimmed, trimmed_len);
    memcpy(result + trimmed_len, query, strlen(query) + 1);
    return result;
  }
  return native_request_path_strdup(trimmed);
}