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| Original file line number | Diff line number | Diff line change |
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| /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | ||
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| /* Monkey HTTP Server | ||
| * ================== | ||
| * Copyright 2001-2015 Monkey Software LLC <[email protected]> | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| #ifndef MK_FILE_H | ||
| #define MK_FILE_H | ||
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| #include <time.h> | ||
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| #define MK_FILE_EXISTS 1 | ||
| #define MK_FILE_READ 2 | ||
| #define MK_FILE_EXEC 4 | ||
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| struct file_info | ||
| { | ||
| off_t size; | ||
| time_t last_modification; | ||
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| /* Suggest flags to open this file */ | ||
| int flags_read_only; | ||
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| unsigned char exists; | ||
| unsigned char is_file; | ||
| unsigned char is_link; | ||
| unsigned char is_directory; | ||
| unsigned char exec_access; | ||
| unsigned char read_access; | ||
| }; | ||
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| int mk_file_get_info(const char *path, struct file_info *f_info, int mode); | ||
| char *mk_file_to_buffer(const char *path); | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,142 @@ | ||
| /*-*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | ||
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| /* Monkey HTTP Server | ||
| * ================== | ||
| * Copyright 2001-2015 Monkey Software LLC <[email protected]> | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| #define _GNU_SOURCE | ||
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| #include <sys/types.h> | ||
| #include <sys/stat.h> | ||
| #include <fcntl.h> | ||
| #include <unistd.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <errno.h> | ||
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| #include "mk_core.h" | ||
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| int mk_file_get_info(const char *path, struct file_info *f_info, int mode) | ||
| { | ||
| struct stat f, target; | ||
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| f_info->exists = MK_FALSE; | ||
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| /* Stat right resource */ | ||
| if (lstat(path, &f) == -1) { | ||
| if (errno == EACCES) { | ||
| f_info->exists = MK_TRUE; | ||
| } | ||
| return -1; | ||
| } | ||
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| f_info->exists = MK_TRUE; | ||
| f_info->is_file = MK_TRUE; | ||
| f_info->is_link = MK_FALSE; | ||
| f_info->is_directory = MK_FALSE; | ||
| f_info->exec_access = MK_FALSE; | ||
| f_info->read_access = MK_FALSE; | ||
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| if (S_ISLNK(f.st_mode)) { | ||
| f_info->is_link = MK_TRUE; | ||
| f_info->is_file = MK_FALSE; | ||
| if (stat(path, &target) == -1) { | ||
| return -1; | ||
| } | ||
| } | ||
| else { | ||
| target = f; | ||
| } | ||
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| f_info->size = target.st_size; | ||
| f_info->last_modification = target.st_mtime; | ||
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| if (S_ISDIR(target.st_mode)) { | ||
| f_info->is_directory = MK_TRUE; | ||
| f_info->is_file = MK_FALSE; | ||
| } | ||
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| /* Check read access */ | ||
| if (mode & MK_FILE_READ) { | ||
| if (((target.st_mode & S_IRUSR) && target.st_uid == EUID) || | ||
| ((target.st_mode & S_IRGRP) && target.st_gid == EGID) || | ||
| (target.st_mode & S_IROTH)) { | ||
| f_info->read_access = MK_TRUE; | ||
| } | ||
| } | ||
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| /* Checking execution */ | ||
| if (mode & MK_FILE_EXEC) { | ||
| if ((target.st_mode & S_IXUSR && target.st_uid == EUID) || | ||
| (target.st_mode & S_IXGRP && target.st_gid == EGID) || | ||
| (target.st_mode & S_IXOTH)) { | ||
| f_info->exec_access = MK_TRUE; | ||
| } | ||
| } | ||
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| /* Suggest open(2) flags */ | ||
| f_info->flags_read_only = O_RDONLY | O_NONBLOCK; | ||
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| #if defined(__linux__) | ||
| /* | ||
| * If the user is the owner of the file or the user is root, it | ||
| * can set the O_NOATIME flag for open(2) operations to avoid | ||
| * inode updates about last accessed time | ||
| */ | ||
| if (target.st_uid == EUID || EUID == 0) { | ||
| f_info->flags_read_only |= O_NOATIME; | ||
| } | ||
| #endif | ||
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| return 0; | ||
| } | ||
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| /* Read file content to a memory buffer, | ||
| * Use this function just for really SMALL files | ||
| */ | ||
| char *mk_file_to_buffer(const char *path) | ||
| { | ||
| FILE *fp; | ||
| char *buffer; | ||
| long bytes; | ||
| struct file_info finfo; | ||
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| if (mk_file_get_info(path, &finfo, MK_FILE_READ) != 0) { | ||
| return NULL; | ||
| } | ||
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| if (!(fp = fopen(path, "r"))) { | ||
| return NULL; | ||
| } | ||
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| buffer = mk_mem_malloc_z(finfo.size + 1); | ||
| if (!buffer) { | ||
| fclose(fp); | ||
| return NULL; | ||
| } | ||
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| bytes = fread(buffer, finfo.size, 1, fp); | ||
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| if (bytes < 1) { | ||
| mk_mem_free(buffer); | ||
| fclose(fp); | ||
| return NULL; | ||
| } | ||
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| fclose(fp); | ||
| return (char *) buffer; | ||
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| } |
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