Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/htpasswd/htpasswd.c	Lines:	0	108	0.0 %
Date:	2017-11-13	Branches:	0	101	0.0 %


/*	$OpenBSD: htpasswd.c,v 1.16 2017/06/07 09:11:52 awolk Exp $ */
/*
 * Copyright (c) 2014 Florian Obser <florian@openbsd.org>
 *
 * 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 <sys/stat.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pwd.h>
#include <readpassphrase.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

__dead void	usage(void);
void		nag(char*);

extern char *__progname;

__dead void
usage(void)
{
	fprintf(stderr, "usage:\t%s [file] login\n", __progname);
	fprintf(stderr, "\t%s -I [file]\n", __progname);
	exit(1);
}

#define MAXNAG 5
int nagcount;

int
main(int argc, char** argv)
{
	char tmpl[sizeof("/tmp/htpasswd-XXXXXXXXXX")];
	char hash[_PASSWORD_LEN], pass[1024], pass2[1024];
	char *line = NULL, *login = NULL, *tok;
	int c, fd, loginlen, batch = 0;
	FILE *in = NULL, *out = NULL;
	const char *file = NULL;
	size_t linesize = 0;
	ssize_t linelen;
	mode_t old_umask;

	if (pledge("stdio rpath wpath cpath flock tmppath tty", NULL) == -1)
		err(1, "pledge");

	while ((c = getopt(argc, argv, "I")) != -1) {
		switch (c) {
		case 'I':
			batch = 1;
			break;
		default:
			usage();
			/* NOT REACHED */
			break;
		}
	}

	argc -= optind;
	argv += optind;

	if (batch) {
		if (argc == 1)
			file = argv[0];
		else if (argc > 1)
			usage();
		else if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
			err(1, "pledge");

		if ((linelen = getline(&line, &linesize, stdin)) == -1)
			err(1, "cannot read login:password from stdin");
		line[linelen-1] = '\0';

		if ((tok = strstr(line, ":")) == NULL)
			errx(1, "cannot find ':' in input");
		*tok++ = '\0';

		if ((loginlen = asprintf(&login, "%s:", line)) == -1)
			err(1, "asprintf");

		if (strlcpy(pass, tok, sizeof(pass)) >= sizeof(pass))
			errx(1, "password too long");
	} else {

		switch (argc) {
		case 1:
			if (pledge("stdio tty flock rpath cpath wpath", NULL) == -1)
				err(1, "pledge");
			if ((loginlen = asprintf(&login, "%s:", argv[0])) == -1)
				err(1, "asprintf");
			break;
		case 2:
			file = argv[0];
			if ((loginlen = asprintf(&login, "%s:", argv[1])) == -1)
				err(1, "asprintf");
			break;
		default:
			usage();
			/* NOT REACHED */
			break;
		}

		if (!readpassphrase("Password: ", pass, sizeof(pass),
		    RPP_ECHO_OFF))
			err(1, "unable to read password");
		if (!readpassphrase("Retype Password: ", pass2, sizeof(pass2),
		    RPP_ECHO_OFF)) {
			explicit_bzero(pass, sizeof(pass));
			err(1, "unable to read password");
		}
		if (strcmp(pass, pass2) != 0) {
			explicit_bzero(pass, sizeof(pass));
			explicit_bzero(pass2, sizeof(pass2));
			errx(1, "passwords don't match");
		}

		explicit_bzero(pass2, sizeof(pass2));
	}

	if (crypt_newhash(pass, "bcrypt,a", hash, sizeof(hash)) != 0)
		err(1, "can't generate hash");
	explicit_bzero(pass, sizeof(pass));

	if (file == NULL)
		printf("%s%s\n", login, hash);
	else {
		if ((in = fopen(file, "r+")) == NULL) {
			if (errno == ENOENT) {
				old_umask = umask(S_IXUSR|
				    S_IWGRP|S_IRGRP|S_IXGRP|
				    S_IWOTH|S_IROTH|S_IXOTH);
				if ((out = fopen(file, "w")) == NULL)
					err(1, "cannot open password file for"
					    " reading or writing");
				umask(old_umask);
			} else
				err(1, "cannot open password file for"
					" reading or writing");
		} else
			if (flock(fileno(in), LOCK_EX|LOCK_NB) == -1)
				errx(1, "cannot lock password file");

		/* file already exits, copy content and filter login out */
		if (out == NULL) {
			strlcpy(tmpl, "/tmp/htpasswd-XXXXXXXXXX", sizeof(tmpl));
			if ((fd = mkstemp(tmpl)) == -1)
				err(1, "mkstemp");

			if ((out = fdopen(fd, "w+")) == NULL)
				err(1, "cannot open tempfile");

			while ((linelen = getline(&line, &linesize, in))
			    != -1) {
				if (strncmp(line, login, loginlen) != 0) {
					if (fprintf(out, "%s", line) == -1)
						errx(1, "cannot write to temp "
						    "file");
					nag(line);
				}
			}
		}
		if (fprintf(out, "%s%s\n", login, hash) == -1)
			errx(1, "cannot write new password hash");

		/* file already exists, overwrite it */
		if (in != NULL) {
			if (fseek(in, 0, SEEK_SET) == -1)
				err(1, "cannot seek in password file");
			if (fseek(out, 0, SEEK_SET) == -1)
				err(1, "cannot seek in temp file");
			if (ftruncate(fileno(in), 0) == -1)
				err(1, "cannot truncate password file");
			while ((linelen = getline(&line, &linesize, out))
			    != -1)
				if (fprintf(in, "%s", line) == -1)
					errx(1, "cannot write to password "
					    "file");
			if (fclose(in) == EOF)
				err(1, "cannot close password file");
		}
		if (fclose(out) == EOF) {
			if (in != NULL)
				err(1, "cannot close temp file");
			else
				err(1, "cannot close password file");
		}
		if (in != NULL && unlink(tmpl) == -1)
			err(1, "cannot delete temp file (%s)", tmpl);
	}
	if (nagcount >= MAXNAG)
		warnx("%d more logins not using bcryt.", nagcount - MAXNAG);
	exit(0);
}

void
nag(char* line)
{
	const char *tok;
	if (strtok(line, ":") != NULL)
		if ((tok = strtok(NULL, ":")) != NULL)
			if (strncmp(tok, "$2a$", 4) != 0 &&
			     strncmp(tok, "$2b$", 4) != 0) {
				nagcount++;
				if (nagcount <= MAXNAG)
					warnx("%s doesn't use bcrypt."
					    " Update the password.", line);
			}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: htpasswd.c,v 1.16 2017/06/07 09:11:52 awolk Exp $ */
2			/*
3			* Copyright (c) 2014 Florian Obser <florian@openbsd.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17
18			#include <sys/stat.h>
19
20			#include <err.h>
21			#include <errno.h>
22			#include <fcntl.h>
23			#include <limits.h>
24			#include <pwd.h>
25			#include <readpassphrase.h>
26			#include <stdio.h>
27			#include <stdlib.h>
28			#include <string.h>
29			#include <unistd.h>
30
31			__dead void usage(void);
32			void nag(char*);
33
34			extern char *__progname;
35
36			__dead void
37			usage(void)
38			{
39			fprintf(stderr, "usage:\t%s [file] login\n", __progname);
40			fprintf(stderr, "\t%s -I [file]\n", __progname);
41			exit(1);
42			}
43
44			#define MAXNAG 5
45			int nagcount;
46
47			int
48			main(int argc, char** argv)
49			{
50			char tmpl[sizeof("/tmp/htpasswd-XXXXXXXXXX")];
51			char hash[_PASSWORD_LEN], pass[1024], pass2[1024];
52			char line = NULL, login = NULL, *tok;
53			int c, fd, loginlen, batch = 0;
54			FILE in = NULL, out = NULL;
55			const char *file = NULL;
56			size_t linesize = 0;
57			ssize_t linelen;
58			mode_t old_umask;
59
60			if (pledge("stdio rpath wpath cpath flock tmppath tty", NULL) == -1)
61			err(1, "pledge");
62
63			while ((c = getopt(argc, argv, "I")) != -1) {
64			switch (c) {
65			case 'I':
66			batch = 1;
67			break;
68			default:
69			usage();
70			/* NOT REACHED */
71			break;
72			}
73			}
74
75			argc -= optind;
76			argv += optind;
77
78			if (batch) {
79			if (argc == 1)
80			file = argv[0];
81			else if (argc > 1)
82			usage();
83			else if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
84			err(1, "pledge");
85
86			if ((linelen = getline(&line, &linesize, stdin)) == -1)
87			err(1, "cannot read login:password from stdin");
88			line[linelen-1] = '\0';
89
90			if ((tok = strstr(line, ":")) == NULL)
91			errx(1, "cannot find ':' in input");
92			*tok++ = '\0';
93
94			if ((loginlen = asprintf(&login, "%s:", line)) == -1)
95			err(1, "asprintf");
96
97			if (strlcpy(pass, tok, sizeof(pass)) >= sizeof(pass))
98			errx(1, "password too long");
99			} else {
100
101			switch (argc) {
102			case 1:
103			if (pledge("stdio tty flock rpath cpath wpath", NULL) == -1)
104			err(1, "pledge");
105			if ((loginlen = asprintf(&login, "%s:", argv[0])) == -1)
106			err(1, "asprintf");
107			break;
108			case 2:
109			file = argv[0];
110			if ((loginlen = asprintf(&login, "%s:", argv[1])) == -1)
111			err(1, "asprintf");
112			break;
113			default:
114			usage();
115			/* NOT REACHED */
116			break;
117			}
118
119			if (!readpassphrase("Password: ", pass, sizeof(pass),
120			RPP_ECHO_OFF))
121			err(1, "unable to read password");
122			if (!readpassphrase("Retype Password: ", pass2, sizeof(pass2),
123			RPP_ECHO_OFF)) {
124			explicit_bzero(pass, sizeof(pass));
125			err(1, "unable to read password");
126			}
127			if (strcmp(pass, pass2) != 0) {
128			explicit_bzero(pass, sizeof(pass));
129			explicit_bzero(pass2, sizeof(pass2));
130			errx(1, "passwords don't match");
131			}
132
133			explicit_bzero(pass2, sizeof(pass2));
134			}
135
136			if (crypt_newhash(pass, "bcrypt,a", hash, sizeof(hash)) != 0)
137			err(1, "can't generate hash");
138			explicit_bzero(pass, sizeof(pass));
139
140			if (file == NULL)
141			printf("%s%s\n", login, hash);
142			else {
143			if ((in = fopen(file, "r+")) == NULL) {
144			if (errno == ENOENT) {
145			old_umask = umask(S_IXUSR\|
146			S_IWGRP\|S_IRGRP\|S_IXGRP\|
147			S_IWOTH\|S_IROTH\|S_IXOTH);
148			if ((out = fopen(file, "w")) == NULL)
149			err(1, "cannot open password file for"
150			" reading or writing");
151			umask(old_umask);
152			} else
153			err(1, "cannot open password file for"
154			" reading or writing");
155			} else
156			if (flock(fileno(in), LOCK_EX\|LOCK_NB) == -1)
157			errx(1, "cannot lock password file");
158
159			/* file already exits, copy content and filter login out */
160			if (out == NULL) {
161			strlcpy(tmpl, "/tmp/htpasswd-XXXXXXXXXX", sizeof(tmpl));
162			if ((fd = mkstemp(tmpl)) == -1)
163			err(1, "mkstemp");
164
165			if ((out = fdopen(fd, "w+")) == NULL)
166			err(1, "cannot open tempfile");
167
168			while ((linelen = getline(&line, &linesize, in))
169			!= -1) {
170			if (strncmp(line, login, loginlen) != 0) {
171			if (fprintf(out, "%s", line) == -1)
172			errx(1, "cannot write to temp "
173			"file");
174			nag(line);
175			}
176			}
177			}
178			if (fprintf(out, "%s%s\n", login, hash) == -1)
179			errx(1, "cannot write new password hash");
180
181			/* file already exists, overwrite it */
182			if (in != NULL) {
183			if (fseek(in, 0, SEEK_SET) == -1)
184			err(1, "cannot seek in password file");
185			if (fseek(out, 0, SEEK_SET) == -1)
186			err(1, "cannot seek in temp file");
187			if (ftruncate(fileno(in), 0) == -1)
188			err(1, "cannot truncate password file");
189			while ((linelen = getline(&line, &linesize, out))
190			!= -1)
191			if (fprintf(in, "%s", line) == -1)
192			errx(1, "cannot write to password "
193			"file");
194			if (fclose(in) == EOF)
195			err(1, "cannot close password file");
196			}
197			if (fclose(out) == EOF) {
198			if (in != NULL)
199			err(1, "cannot close temp file");
200			else
201			err(1, "cannot close password file");
202			}
203			if (in != NULL && unlink(tmpl) == -1)
204			err(1, "cannot delete temp file (%s)", tmpl);
205			}
206			if (nagcount >= MAXNAG)
207			warnx("%d more logins not using bcryt.", nagcount - MAXNAG);
208			exit(0);
209			}
210
211			void
212			nag(char* line)
213			{
214			const char *tok;
215			if (strtok(line, ":") != NULL)
216			if ((tok = strtok(NULL, ":")) != NULL)
217			if (strncmp(tok, "$2a$", 4) != 0 &&
218			strncmp(tok, "$2b$", 4) != 0) {
219			nagcount++;
220			if (nagcount <= MAXNAG)
221			warnx("%s doesn't use bcrypt."
222			" Update the password.", line);
223			}
224			}