diff options
Diffstat (limited to 'contrib/openpam/t/t_file.c')
-rw-r--r-- | contrib/openpam/t/t_file.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/contrib/openpam/t/t_file.c b/contrib/openpam/t/t_file.c new file mode 100644 index 0000000..8de4f97 --- /dev/null +++ b/contrib/openpam/t/t_file.c @@ -0,0 +1,160 @@ +/*- + * 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: t_file.c 648 2013-03-05 17:54:27Z des $ + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "openpam_asprintf.h" + +#include "t.h" + +static struct t_file *tflist; + +/* + * Open a temp file. + */ +struct t_file * +t_fopen(const char *filename) +{ + struct t_file *tf; + int fd; + + if ((tf = calloc(sizeof *tf, 1)) == NULL) + err(1, "%s(): calloc()", __func__); + if (filename) { + if ((tf->name = strdup(filename)) == NULL) + err(1, "%s(): strdup()", __func__); + } else { + asprintf(&tf->name, "%s.%lu.%p.tmp", + t_progname, (unsigned long)getpid(), (void *)tf); + if (tf->name == NULL) + err(1, "%s(): asprintf()", __func__); + } + if ((fd = open(tf->name, O_RDWR|O_CREAT|O_TRUNC, 0600)) < 0) + err(1, "%s(): %s", __func__, tf->name); + if ((tf->file = fdopen(fd, "r+")) == NULL) + err(1, "%s(): fdopen()", __func__); + if ((tf->next = tflist) != NULL) + tf->next->prev = tf; + tflist = tf; + return (tf); +} + +/* + * Write text to the temp file. + */ +int +t_fprintf(struct t_file *tf, const char *fmt, ...) +{ + va_list ap; + int len; + + va_start(ap, fmt); + len = vfprintf(tf->file, fmt, ap); + va_end(ap); + if (ferror(tf->file)) + err(1, "%s(): vfprintf()", __func__); + return (len); +} + +/* + * Rewind the temp file. + */ +void +t_frewind(struct t_file *tf) +{ + + errno = 0; + rewind(tf->file); + if (errno != 0) + err(1, "%s(): rewind()", __func__); +} + +/* + * Return non-zero if an error occurred. + */ +int +t_ferror(struct t_file *tf) +{ + + return (ferror(tf->file)); +} + +/* + * Return non-zero if the end of the file was reached. + */ +int +t_feof(struct t_file *tf) +{ + + return (feof(tf->file)); +} + +/* + * Close a temp file. + */ +void +t_fclose(struct t_file *tf) +{ + + if (tf == tflist) + tflist = tf->next; + if (tf->prev) + tf->prev->next = tf->next; + if (tf->next) + tf->next->prev = tf->prev; + fclose(tf->file); + if (unlink(tf->name) < 0) + warn("%s(): unlink()", __func__); + free(tf->name); + free(tf); +} + +/* + * atexit() function to close all remaining files. + */ +void +t_fcloseall(void) +{ + + while (tflist) + t_fclose(tflist); +} |