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Diffstat (limited to '')
| -rw-r--r-- | lib/util/regress/getdelim/getdelim_test.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/lib/util/regress/getdelim/getdelim_test.c b/lib/util/regress/getdelim/getdelim_test.c new file mode 100644 index 0000000..2e77fd2 --- /dev/null +++ b/lib/util/regress/getdelim/getdelim_test.c @@ -0,0 +1,185 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <config.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_STDBOOL_H +# include <stdbool.h> +#else +# include "compat/stdbool.h" +#endif +#include <limits.h> +#include <unistd.h> + +#include "sudo_compat.h" +#include "sudo_fatal.h" +#include "sudo_util.h" + +sudo_dso_public int main(int argc, char *argv[]); + +ssize_t sudo_getdelim(char **bufp, size_t *bufsizep, int delim, FILE *fp); + +/* + * Test that sudo_getdelim() works as expected. + */ + +struct getdelim_test { + const char *input; + const char *output[4]; + int delim; +}; + +static char longstr[LINE_MAX * 4]; +static struct getdelim_test test_data[] = { + { "a\nb\nc\n", { "a\n", "b\n", "c\n", NULL }, '\n' }, + { "a\nb\nc", { "a\n", "b\n", "c", NULL }, '\n' }, + { "a\tb\tc\t", { "a\t", "b\t", "c\t", NULL }, '\t' }, + { "a\tb\tc", { "a\t", "b\t", "c", NULL }, '\t' }, + { longstr, { longstr, NULL }, '\n' }, + { NULL, { NULL }, '\0' } +}; + +static int errors = 0, ntests = 0; + +static void +runtests(char **buf, size_t *buflen) +{ + int i, j, sv[2]; + pid_t pid; + FILE *fp; + + /* Exercise realloc case by injecting an entry > LINE_MAX. */ + memset(longstr, 'A', sizeof(longstr) - 2); + longstr[sizeof(longstr) - 2] = '\n'; + longstr[sizeof(longstr) - 1] = '\0'; + + for (i = 0; test_data[i].input != NULL; i++) { + if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) + sudo_fatal_nodebug("socketpair"); + + switch ((pid = fork())) { + case -1: + sudo_fatal_nodebug("fork"); + case 0: + /* child */ + close(sv[0]); + if (send(sv[1], test_data[i].input, strlen(test_data[i].input), 0) == -1) { + sudo_warn_nodebug("send"); + _exit(127); + } + _exit(EXIT_SUCCESS); + break; + default: + /* parent */ + break; + } + + close(sv[1]); + if ((fp = fdopen(sv[0], "r")) == NULL) + sudo_fatal_nodebug("fdopen"); + + for (j = 0; test_data[i].output[j] != NULL; j++) { + ntests++; + alarm(10); + if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) == -1) + sudo_fatal_nodebug("sudo_getdelim"); + alarm(0); + if (strcmp(*buf, test_data[i].output[j]) != 0) { + sudo_warnx_nodebug("failed test #%d: expected %s, got %s", + ntests, test_data[i].output[j], *buf); + errors++; + } + } + + /* test EOF */ + ntests++; + alarm(30); + if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) != -1) { + sudo_warnx_nodebug("failed test #%d: expected EOF, got %s", + ntests, *buf); + errors++; + } else { + if (!feof(fp)) { + sudo_warn_nodebug("failed test #%d: expected EOF, got error", + ntests); + errors++; + } + } + + /* test error by closing the underlying fd. */ + clearerr(fp); + close(fileno(fp)); + ntests++; + alarm(30); + if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) != -1) { + sudo_warnx_nodebug("failed test #%d: expected error, got %s", + ntests, *buf); + errors++; + } else { + /* Use feof(3), not ferror(3) so we can detect out of memory. */ + if (feof(fp)) { + sudo_warn_nodebug("failed test #%d: expected error, got EOF", + ntests); + errors++; + } + } + + fclose(fp); + waitpid(pid, NULL, 0); + alarm(0); + } +} + +int +main(int argc, char *argv[]) +{ + size_t buflen = 0; + char *buf = NULL; + int ch; + + initprogname(argc > 0 ? argv[0] : "getdelim_test"); + + while ((ch = getopt(argc, argv, "v")) != -1) { + switch (ch) { + case 'v': + /* ignore */ + break; + default: + fprintf(stderr, "usage: %s [-v]\n", getprogname()); + return EXIT_FAILURE; + } + } + argc -= optind; + argv += optind; + + runtests(&buf, &buflen); + free(buf); + + /* XXX - redo tests with preallocated buffer filled with junk */ + if (ntests != 0) { + printf("%s: %d tests run, %d errors, %d%% success rate\n", + getprogname(), ntests, errors, (ntests - errors) * 100 / ntests); + } + return errors; +} |