Adding upstream version 1.3.1.upstream/1.3.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 506 insertions, 0 deletions

diff --git a/libpamc/test/regress/Makefile b/libpamc/test/regress/Makefile
new file mode 100644
index 0000000..cba474f
--- /dev/null
+++ b/libpamc/test/regress/Makefile
@@ -0,0 +1,7 @@
+CFLAGS = -g -I ../../include
+
+test.libpamc: test.libpamc.o
+	$(CC) -o $@ $(CFLAGS) $< -L ../.. -lpamc
+
+clean:
+	rm -f test.libpamc test.libpamc.o
diff --git a/libpamc/test/regress/run_test.sh b/libpamc/test/regress/run_test.sh
new file mode 100755
index 0000000..6922f03
--- /dev/null
+++ b/libpamc/test/regress/run_test.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+LD_LIBRARY_PATH=../.. ; export LD_LIBRARY_PATH
+PAMC_AGENT_PATH="../agents" ; export PAMC_AGENT_PATH
+
+./test.libpamc
diff --git a/libpamc/test/regress/test.libpamc.c b/libpamc/test/regress/test.libpamc.c
new file mode 100644
index 0000000..b0fff9c
--- /dev/null
+++ b/libpamc/test/regress/test.libpamc.c
@@ -0,0 +1,342 @@
+/*
+ * This is a small test program for testing libpamc against the
+ * secret@here agent. It does the same as the test.secret@here perl
+ * script in this directory, but via the libpamc API.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <security/pam_client.h>
+#include <ctype.h>
+
+struct internal_packet {
+    int length;
+    int at;
+    char *buffer;
+};
+
+
+void append_data(struct internal_packet *packet, int extra, const char *data)
+{
+    if ((extra + packet->at) >= packet->length) {
+	if (packet->length == 0) {
+	    packet->length = 1000;
+	}
+	/* make sure we have at least a char extra space available */
+	while (packet->length <= (extra + packet->at)) {
+	    packet->length <<= 1;
+	}
+	packet->buffer = realloc(packet->buffer, packet->length);
+	if (packet->buffer == NULL) {
+	    fprintf(stderr, "out of memory\n");
+	    exit(1);
+	}
+    }
+
+    if (data != NULL) {
+	memcpy(packet->at + packet->buffer, data, extra);
+    }
+    packet->at += extra;
+
+    /* assisting string manipulation */
+    packet->buffer[packet->at] = '\0';
+}
+
+void append_string(struct internal_packet *packet, const char *string,
+		   int with_nul)
+{
+    append_data(packet, strlen(string) + (with_nul ? 1:0), string);
+}
+
+char *identify_secret(char *identity)
+{
+    struct internal_packet temp_packet;
+    FILE *secrets;
+    int length_id;
+
+    temp_packet.length = temp_packet.at = 0;
+    temp_packet.buffer = NULL;
+
+    append_string(&temp_packet, "/home/", 0);
+    append_string(&temp_packet, getlogin(), 0);
+    append_string(&temp_packet, "/.secret@here", 1);
+
+    secrets = fopen(temp_packet.buffer, "r");
+    if (secrets == NULL) {
+	fprintf(stderr, "server: failed to open\n  [%s]\n",
+		temp_packet.buffer);
+	exit(1);
+    }
+
+    length_id = strlen(identity);
+    for (;;) {
+	char *secret = NULL;
+	temp_packet.at = 0;
+
+	if (fgets(temp_packet.buffer, temp_packet.length, secrets) == NULL) {
+	    fclose(secrets);
+	    return NULL;
+	}
+
+	if (memcmp(temp_packet.buffer, identity, length_id)) {
+	    continue;
+	}
+
+	fclose(secrets);
+	for (secret=temp_packet.buffer; *secret; ++secret) {
+	    if (*secret == ' ' || *secret == '\n' || *secret == '\t') {
+		break;
+	    }
+	}
+	for (; *secret; ++secret) {
+	    if (!(*secret == ' ' || *secret == '\n' || *secret == '\t')) {
+		break;
+	    }
+	}
+
+	for (temp_packet.buffer=secret; *temp_packet.buffer;
+	     ++temp_packet.buffer) {
+	    if (*temp_packet.buffer == ' ' || *temp_packet.buffer == '\n'
+		|| *temp_packet.buffer == '\t') {
+		break;
+	    }
+	}
+	if (*temp_packet.buffer) {
+	    *temp_packet.buffer = '\0';
+	}
+
+	return secret;
+    }
+
+    /* NOT REACHED */
+}
+
+/*
+ * This is a hack, and is fundamentally insecure. All our secrets will be
+ * displayed on the command line for someone doing 'ps' to see. This
+ * is just for programming convenience in this instance, since this
+ * program is simply a regression test. The pam_secret module should
+ * not do this, but make use of md5 routines directly.
+ */
+
+char *create_digest(int length, const char *raw)
+{
+    struct internal_packet temp_packet;
+    FILE *pipe;
+
+    temp_packet.length = temp_packet.at = 0;
+    temp_packet.buffer = NULL;
+
+    append_string(&temp_packet, "echo -n '", 0);
+    append_string(&temp_packet, raw, 0);
+    append_string(&temp_packet, "'|/usr/bin/md5sum -", 1);
+
+    fprintf(stderr, "am attempting to run [%s]\n", temp_packet.buffer);
+
+    pipe = popen(temp_packet.buffer, "r");
+    if (pipe == NULL) {
+	fprintf(stderr, "server: failed to run\n  [%s]\n", temp_packet.buffer);
+	exit(1);
+    }
+
+    temp_packet.at = 0;
+    append_data(&temp_packet, 32, NULL);
+
+    if (fgets(temp_packet.buffer, 33, pipe) == NULL) {
+	fprintf(stderr, "server: failed to read digest\n");
+	exit(1);
+    }
+    if (strlen(temp_packet.buffer) != 32) {
+	fprintf(stderr, "server: digest was not 32 chars?? [%s]\n",
+		temp_packet.buffer);
+	exit(1);
+    }
+
+    fclose(pipe);
+
+    return temp_packet.buffer;
+}
+
+void packet_to_prompt(pamc_bp_t *prompt_p, u_int8_t control,
+		      struct internal_packet *packet)
+{
+    PAM_BP_RENEW(prompt_p, control, packet->at);
+    PAM_BP_FILL(*prompt_p, 0, packet->at, packet->buffer);
+    packet->at = 0;
+}
+
+void prompt_to_packet(pamc_bp_t prompt, struct internal_packet *packet)
+{
+    int data_length;
+
+    data_length = PAM_BP_LENGTH(prompt);
+    packet->at = 0;
+    append_data(packet, data_length, NULL);
+
+    PAM_BP_EXTRACT(prompt, 0, data_length, packet->buffer);
+
+    fprintf(stderr, "server received[%d]: {%d|0x%.2x|%s}\n",
+	    data_length,
+	    PAM_BP_SIZE(prompt), PAM_BP_RCONTROL(prompt),
+	    PAM_BP_RDATA(prompt));
+}
+
+int main(int argc, char **argv)
+{
+    pamc_handle_t pch;
+    pamc_bp_t prompt = NULL;
+    struct internal_packet packet_data, *packet;
+    char *temp_string, *secret, *user, *a_cookie, *seqid, *digest;
+    const char *cookie = "123451234512345";
+    int retval;
+
+    packet = &packet_data;
+    packet->length = 0;
+    packet->at = 0;
+    packet->buffer = NULL;
+
+    pch = pamc_start();
+    if (pch == NULL) {
+	fprintf(stderr, "server: unable to get a handle from libpamc\n");
+	exit(1);
+    }
+
+    temp_string = getlogin();
+    if (temp_string == NULL) {
+	fprintf(stderr, "server: who are you?\n");
+	exit(1);
+    }
+#define DOMAIN "@local.host"
+    user = malloc(1+strlen(temp_string)+strlen(DOMAIN));
+    if (user == NULL) {
+	fprintf(stderr, "server: out of memory for user id\n");
+	exit(1);
+    }
+    sprintf(user, "%s%s", temp_string, DOMAIN);
+
+    append_string(packet, "secret@here/", 0);
+    append_string(packet, user, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, cookie, 0);
+    packet_to_prompt(&prompt, PAM_BPC_SELECT, packet);
+
+    /* get the library to accept the first packet (which should load
+       the secret@here agent) */
+
+    retval = pamc_converse(pch, &prompt);
+    fprintf(stderr, "server: after conversation\n");
+    if (PAM_BP_RCONTROL(prompt) != PAM_BPC_OK) {
+	fprintf(stderr, "server: prompt had unexpected control type: %u\n",
+		PAM_BP_RCONTROL(prompt));
+	exit(1);
+    }
+
+    fprintf(stderr, "server: got a prompt back\n");
+
+    prompt_to_packet(prompt, packet);
+
+    temp_string = strtok(packet->buffer, "|");
+    if (temp_string == NULL) {
+	fprintf(stderr, "server: prompt does not contain anything");
+	exit(1);
+    }
+    seqid = strdup(temp_string);
+    if (seqid == NULL) {
+	fprintf(stderr, "server: unable to store sequence id\n");
+    }
+
+    temp_string = strtok(NULL, "|");
+    if (temp_string == NULL) {
+	fprintf(stderr, "server: no cookie from agent\n");
+	exit(1);
+    }
+    a_cookie = strdup(temp_string);
+    if (a_cookie == NULL) {
+	fprintf(stderr, "server: no memory to store agent cookie\n");
+	exit(1);
+    }
+
+    fprintf(stderr, "server: agent responded with {%s|%s}\n", seqid, a_cookie);
+    secret = identify_secret(user);
+    fprintf(stderr, "server: secret=%s\n", secret);
+
+    /* now, we construct the response */
+    packet->at = 0;
+    append_string(packet, a_cookie, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, cookie, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, secret, 0);
+
+    fprintf(stderr, "server: get digest of %s\n", packet->buffer);
+
+    digest = create_digest(packet->at, packet->buffer);
+
+    fprintf(stderr, "server: secret=%s, digest=%s\n", secret, digest);
+
+    packet->at = 0;
+    append_string(packet, seqid, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, digest, 0);
+    packet_to_prompt(&prompt, PAM_BPC_OK, packet);
+
+    retval = pamc_converse(pch, &prompt);
+    fprintf(stderr, "server: after 2nd conversation\n");
+    if (PAM_BP_RCONTROL(prompt) != PAM_BPC_DONE) {
+	fprintf(stderr, "server: 2nd prompt had unexpected control type: %u\n",
+		PAM_BP_RCONTROL(prompt));
+	exit(1);
+    }
+
+    prompt_to_packet(prompt, packet);
+    PAM_BP_RENEW(&prompt, 0, 0);
+
+    temp_string = strtok(packet->buffer, "|");
+    if (temp_string == NULL) {
+	fprintf(stderr, "no digest from agent\n");
+	exit(1);
+    }
+    temp_string = strdup(temp_string);
+
+    packet->at = 0;
+    append_string(packet, secret, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, cookie, 0);
+    append_string(packet, "|", 0);
+    append_string(packet, a_cookie, 0);
+
+    fprintf(stderr, "server: get digest of %s\n", packet->buffer);
+
+    digest = create_digest(packet->at, packet->buffer);
+
+    fprintf(stderr, "server: digest=%s\n", digest);
+
+    if (strcmp(digest, temp_string)) {
+	fprintf(stderr, "server: agent doesn't know the secret\n");
+	fprintf(stderr, "server: agent says:  [%s]\n"
+	                "server: server says: [%s]\n", temp_string, digest);
+	exit(1);
+    } else {
+	fprintf(stderr, "server: agent seems to know the secret\n");
+
+	packet->at = 0;
+	append_string(packet, cookie, 0);
+	append_string(packet, "|", 0);
+	append_string(packet, secret, 0);
+	append_string(packet, "|", 0);
+	append_string(packet, a_cookie, 0);
+
+	digest = create_digest(packet->at, packet->buffer);
+
+	fprintf(stderr, "server: putenv(\"AUTH_SESSION_TICKET=%s\")\n",
+		digest);
+    }
+
+
+    retval = pamc_end(&pch);
+
+    fprintf(stderr, "server: agent(s) were %shappy to terminate\n",
+	    retval == PAM_BPC_TRUE ? "":"un");
+
+    exit(!retval);
+}
diff --git a/libpamc/test/regress/test.secret@here b/libpamc/test/regress/test.secret@here
new file mode 100755
index 0000000..67fe22e
--- /dev/null
+++ b/libpamc/test/regress/test.secret@here
@@ -0,0 +1,151 @@
+#!/usr/bin/perl
+
+##
+## this is a test script for regressing changes to the secret@here PAM
+## agent
+##
+
+$^W = 1;
+use strict;
+use IPC::Open2;
+
+$| = 1;
+
+my $whoami = `/usr/bin/whoami`; chomp $whoami;
+my $cookie = "12345";
+my $user_domain = "$whoami\@local.host";
+
+my $pid = open2(\*Reader, \*Writer, "../agents/secret\@here blah")
+    or die "failed to load secret\@here agent";
+
+unless (-f (getpwuid($<))[7]."/.secret\@here") {
+    print STDERR "server: ". "no " .(getpwuid($<))[7]. "/.secret\@here file\n";
+    die "no config file";
+}
+
+WriteBinaryPrompt(\*Writer, 0x02, "secret\@here/$user_domain|$cookie");
+
+my ($control, $data) = ReadBinaryPrompt(\*Reader);
+
+print STDERR "server: ". "reply: control=$control, data=$data\n";
+if ($control != 1) {
+    die "expected 1 (OK) for the first agent reply; got $control";
+}
+my ($seqid, $a_cookie) = split '\|', $data;
+
+# server needs to convince agent that it knows the secret before
+# agent will give a valid response
+my $secret = IdentifyLocalSecret($user_domain);
+my $digest = CreateDigest($a_cookie."|".$cookie."|".$secret);
+
+print STDERR "server: ". "digest = $digest\n";
+WriteBinaryPrompt(\*Writer, 0x01, "$seqid|$digest");
+
+# The agent will authenticate us and then reply with its
+# authenticating digest. we check that before we're done.
+
+($control, $data) = ReadBinaryPrompt(\*Reader);
+if ($control != 0x03) {
+    die "server: agent did not reply with a 'done' prompt ($control)\n";
+}
+
+unless ($data eq CreateDigest($secret."|".$cookie."|".$a_cookie)) {
+    die "server: agent is not authenticated\n";
+}
+
+print STDERR "server: agent appears to know secret\n";
+
+my $session_authenticated_ticket
+    = CreateDigest($cookie."|".$secret."|".$a_cookie);
+
+print STDERR "server: should putenv("
+	    ."\"AUTH_SESSION_TICKET=$session_authenticated_ticket\")\n";
+
+exit 0;
+
+sub CreateDigest ($) {
+    my ($data) = @_;
+
+    my $pid = open2(\*MD5out, \*MD5in, "/usr/bin/md5sum -")
+	or die "you'll need /usr/bin/md5sum installed";
+
+    my $oldfd = select MD5in; $|=1; select $oldfd;
+    print MD5in "$data";
+    close MD5in;
+    my $reply = <MD5out>;
+    ($reply) = split /\s/, $reply;
+    print STDERR "server: ". "md5 said: <$reply>\n";
+    close MD5out;
+
+    return $reply;
+}
+
+sub ReadBinaryPrompt ($) {
+    my ($fd) = @_;
+
+    my $buffer = "     ";
+    my $count = read($fd, $buffer, 5);
+    if ($count == 0) {
+	# no more packets to read
+	return (0, "");
+    }
+
+    if ($count != 5) {
+	# broken packet header
+	return (-1, "");
+    }
+
+    my ($length, $control) = unpack("N C", $buffer);
+    if ($length < 5) {
+	# broken packet length
+	return (-1, "");
+    }
+
+    my $data = "";
+    $length -= 5;
+    while ($count = read($fd, $buffer, $length)) {
+	$data .= $buffer;
+	if ($count != $length) {
+	    $length -= $count;
+	    next;
+	}
+
+	print STDERR "server: ". "data is [$data]\n";
+
+	return ($control, $data);
+    }
+
+    # broken packet data
+    return (-1, "");
+}
+
+sub WriteBinaryPrompt ($$$) {
+    my ($fd, $control, $data) = @_;
+
+    my $length = 5 + length($data);
+    printf STDERR "server: ". "{%d|0x%.2x|%s}\n", $length, $control, $data;
+    my $bp = pack("N C a*", $length, $control, $data);
+    print $fd $bp;
+
+    print STDERR "server: ". "control passed to agent\@here\n";
+}
+
+sub IdentifyLocalSecret ($) {
+    my ($identifier) = @_;
+    my $secret;
+
+    my $whoami = `/usr/bin/whoami` ; chomp $whoami;
+    if (open SECRETS, "< " .(getpwuid($<))[7]. "/.secret\@here") {
+	my $line;
+	while (defined ($line = <SECRETS>)) {
+	    my ($id, $sec) = split /[\s]/, $line;
+	    if ((defined $id) && ($id eq $identifier)) {
+		$secret = $sec;
+		last;
+	    }
+	}
+	close SECRETS;
+    }
+
+    return $secret;
+}