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-rw-r--r--contrib/openpam/lib/libpam/openpam_readlinev.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/contrib/openpam/lib/libpam/openpam_readlinev.c b/contrib/openpam/lib/libpam/openpam_readlinev.c
new file mode 100644
index 0000000..5edc368
--- /dev/null
+++ b/contrib/openpam/lib/libpam/openpam_readlinev.c
@@ -0,0 +1,155 @@
+/*-
+ * Copyright (c) 2012 Dag-Erling Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: openpam_readlinev.c 648 2013-03-05 17:54:27Z des $
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+#define MIN_WORDV_SIZE 32
+
+/*
+ * OpenPAM extension
+ *
+ * Read a line from a file and split it into words.
+ */
+
+char **
+openpam_readlinev(FILE *f, int *lineno, int *lenp)
+{
+ char *word, **wordv, **tmp;
+ size_t wordlen, wordvsize;
+ int ch, serrno, wordvlen;
+
+ wordvsize = MIN_WORDV_SIZE;
+ wordvlen = 0;
+ if ((wordv = malloc(wordvsize * sizeof *wordv)) == NULL) {
+ openpam_log(PAM_LOG_ERROR, "malloc(): %m");
+ errno = ENOMEM;
+ return (NULL);
+ }
+ wordv[wordvlen] = NULL;
+ while ((word = openpam_readword(f, lineno, &wordlen)) != NULL) {
+ if ((unsigned int)wordvlen + 1 >= wordvsize) {
+ /* need to expand the array */
+ wordvsize *= 2;
+ tmp = realloc(wordv, wordvsize * sizeof *wordv);
+ if (tmp == NULL) {
+ openpam_log(PAM_LOG_ERROR, "malloc(): %m");
+ errno = ENOMEM;
+ break;
+ }
+ wordv = tmp;
+ }
+ /* insert our word */
+ wordv[wordvlen++] = word;
+ wordv[wordvlen] = NULL;
+ }
+ if (errno != 0) {
+ /* I/O error or out of memory */
+ serrno = errno;
+ while (wordvlen--)
+ free(wordv[wordvlen]);
+ free(wordv);
+ errno = serrno;
+ return (NULL);
+ }
+ /* assert(!ferror(f)) */
+ ch = fgetc(f);
+ /* assert(ch == EOF || ch == '\n') */
+ if (ch == EOF && wordvlen == 0) {
+ free(wordv);
+ return (NULL);
+ }
+ if (ch == '\n' && lineno != NULL)
+ ++*lineno;
+ if (lenp != NULL)
+ *lenp = wordvlen;
+ return (wordv);
+}
+
+/**
+ * The =openpam_readlinev function reads a line from a file, splits it
+ * into words according to the rules described in the =openpam_readword
+ * manual page, and returns a list of those words.
+ *
+ * If =lineno is not =NULL, the integer variable it points to is
+ * incremented every time a newline character is read.
+ * This includes quoted or escaped newline characters and the newline
+ * character at the end of the line.
+ *
+ * If =lenp is not =NULL, the number of words on the line is stored in the
+ * variable to which it points.
+ *
+ * RETURN VALUES
+ *
+ * If successful, the =openpam_readlinev function returns a pointer to a
+ * dynamically allocated array of pointers to individual dynamically
+ * allocated NUL-terminated strings, each containing a single word, in the
+ * order in which they were encountered on the line.
+ * The array is terminated by a =NULL pointer.
+ *
+ * The caller is responsible for freeing both the array and the individual
+ * strings by passing each of them to =!free.
+ *
+ * If the end of the line was reached before any words were read,
+ * =openpam_readlinev returns a pointer to a dynamically allocated array
+ * containing a single =NULL pointer.
+ *
+ * The =openpam_readlinev function can fail and return =NULL for one of
+ * four reasons:
+ *
+ * - The end of the file was reached before any words were read; :errno is
+ * zero, =!ferror returns zero, and =!feof returns a non-zero value.
+ *
+ * - The end of the file was reached while a quote or backslash escape
+ * was in effect; :errno is set to =EINVAL, =!ferror returns zero, and
+ * =!feof returns a non-zero value.
+ *
+ * - An error occurred while reading from the file; :errno is non-zero,
+ * =!ferror returns a non-zero value and =!feof returns zero.
+ *
+ * - A =!malloc or =!realloc call failed; :errno is set to =ENOMEM,
+ * =!ferror returns a non-zero value, and =!feof may or may not return
+ * a non-zero value.
+ *
+ * >openpam_readline
+ * >openpam_readword
+ *
+ * AUTHOR DES
+ */
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