diff options
author | Andreas Kling <awesomekling@gmail.com> | 2019-07-04 16:16:50 +0200 |
---|---|---|
committer | Andreas Kling <awesomekling@gmail.com> | 2019-07-04 16:16:50 +0200 |
commit | 04b9dc2d30cfc9b383029f6a4b02e2725108b0ae (patch) | |
tree | e117a998173b767f9fd009d49c4f8573d8b85432 /LibC/pwd.cpp | |
parent | 63814ffebf16291419745cd8ba29a4d2fd888563 (diff) | |
download | serenity-04b9dc2d30cfc9b383029f6a4b02e2725108b0ae.zip |
Libraries: Create top level directory for libraries.
Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.
Diffstat (limited to 'LibC/pwd.cpp')
-rw-r--r-- | LibC/pwd.cpp | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/LibC/pwd.cpp b/LibC/pwd.cpp deleted file mode 100644 index 3303cf3d91..0000000000 --- a/LibC/pwd.cpp +++ /dev/null @@ -1,128 +0,0 @@ -#include <AK/AKString.h> -#include <pwd.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <unistd.h> - -extern "C" { - -#define PWDB_STR_MAX_LEN 256 - -struct passwd_with_strings : public passwd { - char name_buffer[PWDB_STR_MAX_LEN]; - char passwd_buffer[PWDB_STR_MAX_LEN]; - char gecos_buffer[PWDB_STR_MAX_LEN]; - char dir_buffer[PWDB_STR_MAX_LEN]; - char shell_buffer[PWDB_STR_MAX_LEN]; -}; - -static FILE* __pwdb_stream = nullptr; -static unsigned __pwdb_line_number = 0; -static struct passwd_with_strings* __pwdb_entry = nullptr; - -void setpwent() -{ - __pwdb_line_number = 0; - if (__pwdb_stream) { - rewind(__pwdb_stream); - } else { - __pwdb_stream = fopen("/etc/passwd", "r"); - if (!__pwdb_stream) { - perror("open /etc/passwd"); - } - assert(__pwdb_stream); - __pwdb_entry = (struct passwd_with_strings*)mmap_with_name(nullptr, getpagesize(), PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0, "setpwent"); - } -} - -void endpwent() -{ - __pwdb_line_number = 0; - if (__pwdb_stream) { - fclose(__pwdb_stream); - __pwdb_stream = nullptr; - } - if (__pwdb_entry) { - munmap(__pwdb_entry, getpagesize()); - __pwdb_entry = nullptr; - } -} - -struct passwd* getpwuid(uid_t uid) -{ - setpwent(); - while (auto* pw = getpwent()) { - if (pw->pw_uid == uid) - return pw; - } - return nullptr; -} - -struct passwd* getpwnam(const char* name) -{ - setpwent(); - while (auto* pw = getpwent()) { - if (!strcmp(pw->pw_name, name)) - return pw; - } - return nullptr; -} - -struct passwd* getpwent() -{ - if (!__pwdb_stream) - setpwent(); - - assert(__pwdb_stream); - if (feof(__pwdb_stream)) - return nullptr; - -next_entry: - char buffer[1024]; - ++__pwdb_line_number; - char* s = fgets(buffer, sizeof(buffer), __pwdb_stream); - if (!s) - return nullptr; - assert(__pwdb_stream); - if (feof(__pwdb_stream)) - return nullptr; - String line(s, Chomp); - auto parts = line.split(':'); - if (parts.size() != 7) { - fprintf(stderr, "getpwent(): Malformed entry on line %u\n", __pwdb_line_number); - goto next_entry; - } - auto& e_name = parts[0]; - auto& e_passwd = parts[1]; - auto& e_uid_string = parts[2]; - auto& e_gid_string = parts[3]; - auto& e_gecos = parts[4]; - auto& e_dir = parts[5]; - auto& e_shell = parts[6]; - bool ok; - uid_t e_uid = e_uid_string.to_uint(ok); - if (!ok) { - fprintf(stderr, "getpwent(): Malformed UID on line %u\n", __pwdb_line_number); - goto next_entry; - } - gid_t e_gid = e_gid_string.to_uint(ok); - if (!ok) { - fprintf(stderr, "getpwent(): Malformed GID on line %u\n", __pwdb_line_number); - goto next_entry; - } - __pwdb_entry->pw_uid = e_uid; - __pwdb_entry->pw_gid = e_gid; - __pwdb_entry->pw_name = __pwdb_entry->name_buffer; - __pwdb_entry->pw_passwd = __pwdb_entry->passwd_buffer; - __pwdb_entry->pw_gecos = __pwdb_entry->gecos_buffer; - __pwdb_entry->pw_dir = __pwdb_entry->dir_buffer; - __pwdb_entry->pw_shell = __pwdb_entry->shell_buffer; - strncpy(__pwdb_entry->name_buffer, e_name.characters(), PWDB_STR_MAX_LEN); - strncpy(__pwdb_entry->passwd_buffer, e_passwd.characters(), PWDB_STR_MAX_LEN); - strncpy(__pwdb_entry->gecos_buffer, e_gecos.characters(), PWDB_STR_MAX_LEN); - strncpy(__pwdb_entry->dir_buffer, e_dir.characters(), PWDB_STR_MAX_LEN); - strncpy(__pwdb_entry->shell_buffer, e_shell.characters(), PWDB_STR_MAX_LEN); - return __pwdb_entry; -} -} |