openpam_readline.c (228690) | openpam_readline.c (236099) |
---|---|
1/*- 2 * Copyright (c) 2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by ThinkSec AS and 7 * Network Associates Laboratories, the Security Research Division of 8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 --- 18 unchanged lines hidden (view full) --- 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * | 1/*- 2 * Copyright (c) 2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by ThinkSec AS and 7 * Network Associates Laboratories, the Security Research Division of 8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 --- 18 unchanged lines hidden (view full) --- 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * |
35 * $Id: openpam_readline.c 473 2011-11-03 10:48:25Z des $ | 35 * $Id: openpam_readline.c 596 2012-04-14 14:52:40Z des $ |
36 */ 37 38#ifdef HAVE_CONFIG_H 39# include "config.h" 40#endif 41 42#include <ctype.h> 43#include <stdio.h> 44#include <stdlib.h> 45 46#include <security/pam_appl.h> | 36 */ 37 38#ifdef HAVE_CONFIG_H 39# include "config.h" 40#endif 41 42#include <ctype.h> 43#include <stdio.h> 44#include <stdlib.h> 45 46#include <security/pam_appl.h> |
47 |
|
47#include "openpam_impl.h" 48 49#define MIN_LINE_LENGTH 128 50 51/* 52 * OpenPAM extension 53 * 54 * Read a line from a file. 55 */ 56 57char * 58openpam_readline(FILE *f, int *lineno, size_t *lenp) 59{ 60 char *line; 61 size_t len, size; 62 int ch; 63 | 48#include "openpam_impl.h" 49 50#define MIN_LINE_LENGTH 128 51 52/* 53 * OpenPAM extension 54 * 55 * Read a line from a file. 56 */ 57 58char * 59openpam_readline(FILE *f, int *lineno, size_t *lenp) 60{ 61 char *line; 62 size_t len, size; 63 int ch; 64 |
64 if ((line = malloc(MIN_LINE_LENGTH)) == NULL) | 65 if ((line = malloc(size = MIN_LINE_LENGTH)) == NULL) { 66 openpam_log(PAM_LOG_ERROR, "malloc(): %m"); |
65 return (NULL); | 67 return (NULL); |
66 size = MIN_LINE_LENGTH; | 68 } |
67 len = 0; | 69 len = 0; |
68 69#define line_putch(ch) do { \ 70 if (len >= size - 1) { \ 71 char *tmp = realloc(line, size *= 2); \ 72 if (tmp == NULL) \ 73 goto fail; \ 74 line = tmp; \ 75 } \ 76 line[len++] = ch; \ 77 line[len] = '\0'; \ 78} while (0) 79 | |
80 for (;;) { 81 ch = fgetc(f); 82 /* strip comment */ 83 if (ch == '#') { 84 do { 85 ch = fgetc(f); 86 } while (ch != EOF && ch != '\n'); 87 } --- 12 unchanged lines hidden (view full) --- 100 /* continuation */ 101 if (line[len - 1] == '\\') { 102 line[--len] = '\0'; 103 continue; 104 } 105 /* done */ 106 break; 107 } | 70 for (;;) { 71 ch = fgetc(f); 72 /* strip comment */ 73 if (ch == '#') { 74 do { 75 ch = fgetc(f); 76 } while (ch != EOF && ch != '\n'); 77 } --- 12 unchanged lines hidden (view full) --- 90 /* continuation */ 91 if (line[len - 1] == '\\') { 92 line[--len] = '\0'; 93 continue; 94 } 95 /* done */ 96 break; 97 } |
108 /* whitespace */ 109 if (isspace(ch)) { 110 /* ignore leading whitespace */ 111 /* collapse linear whitespace */ 112 if (len > 0 && line[len - 1] != ' ') 113 line_putch(' '); 114 continue; 115 } | |
116 /* anything else */ | 98 /* anything else */ |
117 line_putch(ch); | 99 if (openpam_straddch(&line, &size, &len, ch) != 0) 100 goto fail; |
118 } | 101 } |
119 120 /* remove trailing whitespace */ 121 while (len > 0 && isspace((unsigned char)line[len - 1])) 122 --len; 123 line[len] = '\0'; | |
124 if (len == 0) 125 goto fail; 126 if (lenp != NULL) 127 *lenp = len; | 102 if (len == 0) 103 goto fail; 104 if (lenp != NULL) 105 *lenp = len; |
106 openpam_log(PAM_LOG_LIBDEBUG, "returning '%s'", line); |
|
128 return (line); 129fail: 130 FREE(line); 131 return (NULL); 132} 133 134/** | 107 return (line); 108fail: 109 FREE(line); 110 return (NULL); 111} 112 113/** |
114 * DEPRECATED openpam_readlinev 115 * |
|
135 * The =openpam_readline function reads a line from a file, and returns it | 116 * The =openpam_readline function reads a line from a file, and returns it |
136 * in a NUL-terminated buffer allocated with =malloc. | 117 * in a NUL-terminated buffer allocated with =!malloc. |
137 * 138 * The =openpam_readline function performs a certain amount of processing 139 * on the data it reads: 140 * | 118 * 119 * The =openpam_readline function performs a certain amount of processing 120 * on the data it reads: 121 * |
141 * - Comments (introduced by a hash sign) are stripped, as is leading and 142 * trailing whitespace. 143 * - Any amount of linear whitespace is collapsed to a single space. | 122 * - Comments (introduced by a hash sign) are stripped. 123 * |
144 * - Blank lines are ignored. | 124 * - Blank lines are ignored. |
125 * |
|
145 * - If a line ends in a backslash, the backslash is stripped and the 146 * next line is appended. 147 * 148 * If =lineno is not =NULL, the integer variable it points to is 149 * incremented every time a newline character is read. 150 * 151 * If =lenp is not =NULL, the length of the line (not including the 152 * terminating NUL character) is stored in the variable it points to. 153 * 154 * The caller is responsible for releasing the returned buffer by passing | 126 * - If a line ends in a backslash, the backslash is stripped and the 127 * next line is appended. 128 * 129 * If =lineno is not =NULL, the integer variable it points to is 130 * incremented every time a newline character is read. 131 * 132 * If =lenp is not =NULL, the length of the line (not including the 133 * terminating NUL character) is stored in the variable it points to. 134 * 135 * The caller is responsible for releasing the returned buffer by passing |
155 * it to =free. | 136 * it to =!free. 137 * 138 * >openpam_readlinev 139 * >openpam_readword |
156 */ | 140 */ |