52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#include "ipfs/os/utils.h"
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#include <unistd.h>
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#include <sys/types.h>
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#include <pwd.h>
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#include <unistd.h>
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/**
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* get an environment varible from the os
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* @param variable the variable to look for
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* @returns the results
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*/
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char* os_utils_getenv(char* variable) {
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return getenv(variable);
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}
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/**
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* returns the user's home directory
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* @returns the home directory
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*/
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char* os_utils_get_homedir() {
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struct passwd *pw = getpwuid(getuid());
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return pw->pw_dir;
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}
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/**
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* join 2 pieces of a filepath, being careful about the slashes
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* @param root the root part
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* @param extension what should be concatenated
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* @param results where to put the results
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* @param max_len throw an error if the total is longer than max_len
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*/
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int os_utils_filepath_join(char* root, char* extension, char* results, unsigned long max_len) {
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//TODO: implement slash checks
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if (strlen(root) + strlen(extension) + 1 > max_len)
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return 0;
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strncpy(results, root, strlen(root) + 1);
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strncat(results, extension, strlen(extension)+1);
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return 1;
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}
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int os_utils_file_exists(char* file_name) {
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if (access(file_name, F_OK) != -1)
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return 1;
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return 0;
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}
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int os_utils_directory_writeable(char* path) {
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int result = access("/root/", W_OK);
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return result == 0;
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}
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