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Diffstat (limited to 'src/libsystemd-network/test-dhcp-option.c')
-rw-r--r--src/libsystemd-network/test-dhcp-option.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/src/libsystemd-network/test-dhcp-option.c b/src/libsystemd-network/test-dhcp-option.c
new file mode 100644
index 000000000..8659fd502
--- /dev/null
+++ b/src/libsystemd-network/test-dhcp-option.c
@@ -0,0 +1,378 @@
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+
+#include "util.h"
+#include "macro.h"
+
+#include "dhcp-protocol.h"
+#include "dhcp-internal.h"
+
+struct option_desc {
+ uint8_t sname[64];
+ int snamelen;
+ uint8_t file[128];
+ int filelen;
+ uint8_t options[128];
+ int len;
+ bool success;
+ int filepos;
+ int snamepos;
+ int pos;
+};
+
+static bool verbose = false;
+
+static struct option_desc option_tests[] = {
+ { {}, 0, {}, 0, { 42, 5, 65, 66, 67, 68, 69 }, 7, false, },
+ { {}, 0, {}, 0, { 42, 5, 65, 66, 67, 68, 69, 0, 0,
+ DHCP_OPTION_MESSAGE_TYPE, 1, DHCP_ACK }, 12, true, },
+ { {}, 0, {}, 0, { 8, 255, 70, 71, 72 }, 5, false, },
+ { {}, 0, {}, 0, { 0x35, 0x01, 0x05, 0x36, 0x04, 0x01, 0x00, 0xa8,
+ 0xc0, 0x33, 0x04, 0x00, 0x01, 0x51, 0x80, 0x01,
+ 0x04, 0xff, 0xff, 0xff, 0x00, 0x03, 0x04, 0xc0,
+ 0xa8, 0x00, 0x01, 0x06, 0x04, 0xc0, 0xa8, 0x00,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
+ 40, true, },
+ { {}, 0, {}, 0, { DHCP_OPTION_MESSAGE_TYPE, 1, DHCP_OFFER,
+ 42, 3, 0, 0, 0 }, 8, true, },
+ { {}, 0, {}, 0, { 42, 2, 1, 2, 44 }, 5, false, },
+
+ { {}, 0,
+ { 222, 3, 1, 2, 3, DHCP_OPTION_MESSAGE_TYPE, 1, DHCP_NAK }, 8,
+ { DHCP_OPTION_OVERLOAD, 1, DHCP_OVERLOAD_FILE }, 3, true, },
+
+ { { 1, 4, 1, 2, 3, 4, DHCP_OPTION_MESSAGE_TYPE, 1, DHCP_ACK }, 9,
+ { 222, 3, 1, 2, 3 }, 5,
+ { DHCP_OPTION_OVERLOAD, 1,
+ DHCP_OVERLOAD_FILE|DHCP_OVERLOAD_SNAME }, 3, true, },
+};
+
+static const char *dhcp_type(int type)
+{
+ switch(type) {
+ case DHCP_DISCOVER:
+ return "DHCPDISCOVER";
+ case DHCP_OFFER:
+ return "DHCPOFFER";
+ case DHCP_REQUEST:
+ return "DHCPREQUEST";
+ case DHCP_DECLINE:
+ return "DHCPDECLINE";
+ case DHCP_ACK:
+ return "DHCPACK";
+ case DHCP_NAK:
+ return "DHCPNAK";
+ case DHCP_RELEASE:
+ return "DHCPRELEASE";
+ default:
+ return "unknown";
+ }
+}
+
+static void test_invalid_buffer_length(void)
+{
+ DHCPMessage message;
+
+ assert_se(dhcp_option_parse(&message, 0, NULL, NULL) == -EINVAL);
+ assert_se(dhcp_option_parse(&message, sizeof(DHCPMessage), NULL, NULL)
+ == -EINVAL);
+}
+
+static void test_cookie(void)
+{
+ _cleanup_free_ DHCPMessage *message;
+ size_t len = sizeof(DHCPMessage) + 4;
+ uint8_t *opt;
+
+ message = malloc0(len);
+
+ opt = (uint8_t *)(message + 1);
+ opt[0] = 0xff;
+
+ assert_se(dhcp_option_parse(message, len, NULL, NULL) == -EINVAL);
+
+ opt[0] = 99;
+ opt[1] = 130;
+ opt[2] = 83;
+ opt[3] = 99;
+
+ assert_se(dhcp_option_parse(message, len, NULL, NULL) == -ENOMSG);
+}
+
+static DHCPMessage *create_message(uint8_t *options, uint16_t optlen,
+ uint8_t *file, uint8_t filelen,
+ uint8_t *sname, uint8_t snamelen)
+{
+ DHCPMessage *message;
+ size_t len = sizeof(DHCPMessage) + 4 + optlen;
+ uint8_t *opt;
+
+ message = malloc0(len);
+ opt = (uint8_t *)(message + 1);
+
+ opt[0] = 99;
+ opt[1] = 130;
+ opt[2] = 83;
+ opt[3] = 99;
+
+ if (options && optlen)
+ memcpy(&opt[4], options, optlen);
+
+ if (file && filelen <= 128)
+ memcpy(&message->file, file, filelen);
+
+ if (sname && snamelen <= 64)
+ memcpy(&message->sname, sname, snamelen);
+
+ return message;
+}
+
+static void test_ignore_opts(uint8_t *descoption, int *descpos, int *desclen)
+{
+ while (*descpos < *desclen) {
+ switch(descoption[*descpos]) {
+ case DHCP_OPTION_PAD:
+ *descpos += 1;
+ break;
+
+ case DHCP_OPTION_MESSAGE_TYPE:
+ case DHCP_OPTION_OVERLOAD:
+ *descpos += 3;
+ break;
+
+ default:
+ return;
+ }
+ }
+}
+
+static int test_options_cb(uint8_t code, uint8_t len, const uint8_t *option,
+ void *user_data)
+{
+ struct option_desc *desc = user_data;
+ uint8_t *descoption = NULL;
+ int *desclen = NULL, *descpos = NULL;
+ uint8_t optcode = 0;
+ uint8_t optlen = 0;
+ uint8_t i;
+
+ assert_se((!desc && !code && !len) || desc);
+
+ if (!desc)
+ return -EINVAL;
+
+ assert_se(code != DHCP_OPTION_PAD);
+ assert_se(code != DHCP_OPTION_END);
+ assert_se(code != DHCP_OPTION_MESSAGE_TYPE);
+ assert_se(code != DHCP_OPTION_OVERLOAD);
+
+ while (desc->pos >= 0 || desc->filepos >= 0 || desc->snamepos >= 0) {
+
+ if (desc->pos >= 0) {
+ descoption = &desc->options[0];
+ desclen = &desc->len;
+ descpos = &desc->pos;
+ } else if (desc->filepos >= 0) {
+ descoption = &desc->file[0];
+ desclen = &desc->filelen;
+ descpos = &desc->filepos;
+ } else if (desc->snamepos >= 0) {
+ descoption = &desc->sname[0];
+ desclen = &desc->snamelen;
+ descpos = &desc->snamepos;
+ }
+
+ assert_se(descoption && desclen && descpos);
+
+ if (*desclen)
+ test_ignore_opts(descoption, descpos, desclen);
+
+ if (*descpos < *desclen)
+ break;
+
+ if (*descpos == *desclen)
+ *descpos = -1;
+ }
+
+ assert_se(descpos);
+ assert_se(*descpos != -1);
+
+ optcode = descoption[*descpos];
+ optlen = descoption[*descpos + 1];
+
+ if (verbose)
+ printf("DHCP code %2d(%2d) len %2d(%2d) ", code, optcode,
+ len, optlen);
+
+ assert_se(code == optcode);
+ assert_se(len == optlen);
+
+ for (i = 0; i < len; i++) {
+
+ if (verbose)
+ printf("0x%02x(0x%02x) ", option[i],
+ descoption[*descpos + 2 + i]);
+
+ assert_se(option[i] == descoption[*descpos + 2 + i]);
+ }
+
+ if (verbose)
+ printf("\n");
+
+ *descpos += optlen + 2;
+
+ test_ignore_opts(descoption, descpos, desclen);
+
+ if (desc->pos != -1 && desc->pos == desc->len)
+ desc->pos = -1;
+
+ if (desc->filepos != -1 && desc->filepos == desc->filelen)
+ desc->filepos = -1;
+
+ if (desc->snamepos != -1 && desc->snamepos == desc->snamelen)
+ desc->snamepos = -1;
+
+ return 0;
+}
+
+static void test_options(struct option_desc *desc)
+{
+ uint8_t *options = NULL;
+ uint8_t *file = NULL;
+ uint8_t *sname = NULL;
+ int optlen = 0;
+ int filelen = 0;
+ int snamelen = 0;
+ int buflen = 0;
+ _cleanup_free_ DHCPMessage *message;
+ int res;
+
+ if (desc) {
+ file = &desc->file[0];
+ filelen = desc->filelen;
+ if (!filelen)
+ desc->filepos = -1;
+
+ sname = &desc->sname[0];
+ snamelen = desc->snamelen;
+ if (!snamelen)
+ desc->snamepos = -1;
+
+ options = &desc->options[0];
+ optlen = desc->len;
+ desc->pos = 0;
+ }
+ message = create_message(options, optlen, file, filelen,
+ sname, snamelen);
+
+ buflen = sizeof(DHCPMessage) + 4 + optlen;
+
+ if (!desc) {
+ assert_se((res = dhcp_option_parse(message, buflen,
+ test_options_cb,
+ NULL)) == -ENOMSG);
+ } else if (desc->success) {
+ assert_se((res = dhcp_option_parse(message, buflen,
+ test_options_cb,
+ desc)) >= 0);
+ assert_se(desc->pos == -1 && desc->filepos == -1 &&
+ desc->snamepos == -1);
+ } else
+ assert_se((res = dhcp_option_parse(message, buflen,
+ test_options_cb,
+ desc)) < 0);
+
+ if (verbose)
+ printf("DHCP type %s\n", dhcp_type(res));
+}
+
+static uint8_t result[64] = {
+ 'A', 'B', 'C', 'D',
+};
+
+static uint8_t options[64] = {
+ 'A', 'B', 'C', 'D',
+ 160, 2, 0x11, 0x12,
+ 0,
+ 31, 8, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
+ 0,
+ 55, 3, 0x51, 0x52, 0x53,
+ 17, 7, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 255
+};
+
+static void test_option_set(void)
+{
+ size_t len, oldlen;
+ int pos, i;
+ uint8_t *opt;
+
+ assert_se(dhcp_option_append(NULL, NULL, 0, 0, NULL) == -EINVAL);
+
+ len = 0;
+ opt = &result[0];
+ assert_se(dhcp_option_append(&opt, NULL, 0, 0, NULL) == -EINVAL);
+ assert_se(opt == &result[0] && len == 0);
+
+ assert_se(dhcp_option_append(&opt, &len, DHCP_OPTION_PAD,
+ 0, NULL) == -ENOBUFS);
+ assert_se(opt == &result[0] && len == 0);
+
+ opt = &result[4];
+ len = 1;
+ assert_se(dhcp_option_append(&opt, &len, DHCP_OPTION_PAD,
+ 0, NULL) >= 0);
+ assert_se(opt == &result[5] && len == 0);
+
+ pos = 4;
+ len = 60;
+ while (pos < 64 && options[pos] != DHCP_OPTION_END) {
+ opt = &result[pos];
+ oldlen = len;
+
+ assert_se(dhcp_option_append(&opt, &len, options[pos],
+ options[pos + 1],
+ &options[pos + 2]) >= 0);
+
+ if (options[pos] == DHCP_OPTION_PAD) {
+ assert_se(opt == &result[pos + 1]);
+ assert_se(len == oldlen - 1);
+ pos++;
+ } else {
+ assert_se(opt == &result[pos + 2 + options[pos + 1]]);
+ assert_se(len == oldlen - 2 - options[pos + 1]);
+ pos += 2 + options[pos + 1];
+ }
+ }
+
+ for (i = 0; i < pos; i++) {
+ if (verbose)
+ printf("%2d: 0x%02x(0x%02x)\n", i, result[i],
+ options[i]);
+ assert_se(result[i] == options[i]);
+ }
+
+ if (verbose)
+ printf ("\n");
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned int i;
+
+ test_invalid_buffer_length();
+ test_cookie();
+
+ test_options(NULL);
+
+ for (i = 0; i < ELEMENTSOF(option_tests); i++)
+ test_options(&option_tests[i]);
+
+ test_option_set();
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-16 04:01:52 +0000