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Diffstat (limited to 'src/kernel/tests/lib/tst_net.c')
| -rw-r--r-- | src/kernel/tests/lib/tst_net.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/kernel/tests/lib/tst_net.c b/src/kernel/tests/lib/tst_net.c new file mode 100644 index 0000000..8a589b0 --- /dev/null +++ b/src/kernel/tests/lib/tst_net.c @@ -0,0 +1,221 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2017-2019 Petr Vorel <pvorel@suse.cz> + * Copyright (c) 2019 Martin Doucha <mdoucha@suse.cz> + */ + +#include <errno.h> +#include <netdb.h> +#include <string.h> +#include <stdlib.h> + +#define TST_NO_DEFAULT_MAIN +#include "tst_test.h" +#include "tst_net.h" +#include "tst_private.h" + +void tst_print_svar(const char *name, const char *val) +{ + if (name && val) + printf("export %s=\"%s\"\n", name, val); +} + +void tst_print_svar_change(const char *name, const char *val) +{ + if (name && val) + printf("export %s=\"${%s:-%s}\"\n", name, name, val); +} + +/* + * Function bit_count is from ipcalc project, ipcalc.c. + */ +static int tst_bit_count(uint32_t i) +{ + int c = 0; + unsigned int seen_one = 0; + + while (i > 0) { + if (i & 1) { + seen_one = 1; + c++; + } else { + if (seen_one) + return -1; + } + i >>= 1; + } + + return c; +} + +/* + * Function mask2prefix is from ipcalc project, ipcalc.c. + */ +static int tst_mask2prefix(struct in_addr mask) +{ + return tst_bit_count(ntohl(mask.s_addr)); +} + +/* + * Function ipv4_mask_to_int is from ipcalc project, ipcalc.c. + */ +static int tst_ipv4_mask_to_int(const char *prefix) +{ + int ret; + struct in_addr in; + + ret = inet_pton(AF_INET, prefix, &in); + if (ret == 0) + return -1; + + return tst_mask2prefix(in); +} + +/* + * Function safe_atoi is from ipcalc project, ipcalc.c. + */ +static int tst_safe_atoi(const char *s, int *ret_i) +{ + char *x = NULL; + long l; + + errno = 0; + l = strtol(s, &x, 0); + + if (!x || x == s || *x || errno) + return errno > 0 ? -errno : -EINVAL; + + if ((long)(int)l != l) + return -ERANGE; + + *ret_i = (int)l; + + return 0; +} + +/* + * Function get_prefix use code from ipcalc project, str_to_prefix/ipcalc.c. + */ +int tst_get_prefix(const char *ip_str, int is_ipv6) +{ + char *prefix_str = NULL; + int prefix = -1, r; + + prefix_str = strchr(ip_str, '/'); + if (!prefix_str) + return -1; + + *(prefix_str++) = '\0'; + + if (!is_ipv6 && strchr(prefix_str, '.')) + prefix = tst_ipv4_mask_to_int(prefix_str); + else { + r = tst_safe_atoi(prefix_str, &prefix); + if (r != 0) + tst_brk_comment("conversion error: '%s' is not integer", + prefix_str); + } + + if (prefix < 0 || ((is_ipv6 && prefix > MAX_IPV6_PREFIX) || + (!is_ipv6 && prefix > MAX_IPV4_PREFIX))) + tst_brk_comment("bad %s prefix: %s", is_ipv6 ? "IPv6" : "IPv4", + prefix_str); + + return prefix; +} + +void tst_get_in_addr(const char *ip_str, struct in_addr *ip) +{ + if (inet_pton(AF_INET, ip_str, ip) <= 0) + tst_brk_comment("bad IPv4 address: '%s'", ip_str); +} + +void tst_get_in6_addr(const char *ip_str, struct in6_addr *ip6) +{ + if (inet_pton(AF_INET6, ip_str, ip6) <= 0) + tst_brk_comment("bad IPv6 address: '%s'", ip_str); +} + +socklen_t tst_get_connect_address(int sock, struct sockaddr_storage *addr) +{ + struct sockaddr_in *inet_ptr; + struct sockaddr_in6 *inet6_ptr; + size_t tmp_size; + socklen_t ret = sizeof(*addr); + + SAFE_GETSOCKNAME(sock, (struct sockaddr*)addr, &ret); + + /* Sanitize wildcard addresses */ + switch (addr->ss_family) { + case AF_INET: + inet_ptr = (struct sockaddr_in*)addr; + + switch (ntohl(inet_ptr->sin_addr.s_addr)) { + case INADDR_ANY: + case INADDR_BROADCAST: + inet_ptr->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + break; + } + + break; + + case AF_INET6: + inet6_ptr = (struct sockaddr_in6*)addr; + tmp_size = sizeof(struct in6_addr); + + if (!memcmp(&inet6_ptr->sin6_addr, &in6addr_any, tmp_size)) { + memcpy(&inet6_ptr->sin6_addr, &in6addr_loopback, + tmp_size); + } + + break; + } + + return ret; +} + +void tst_init_sockaddr_inet(struct sockaddr_in *sa, const char *ip_str, uint16_t port) +{ + memset(sa, 0, sizeof(struct sockaddr_in)); + sa->sin_family = AF_INET; + sa->sin_port = htons(port); + tst_get_in_addr(ip_str, &sa->sin_addr); +} + +void tst_init_sockaddr_inet_bin(struct sockaddr_in *sa, uint32_t ip_val, uint16_t port) +{ + memset(sa, 0, sizeof(struct sockaddr_in)); + sa->sin_family = AF_INET; + sa->sin_port = htons(port); + sa->sin_addr.s_addr = htonl(ip_val); +} + +void tst_init_sockaddr_inet6(struct sockaddr_in6 *sa, const char *ip_str, uint16_t port) +{ + memset(sa, 0, sizeof(struct sockaddr_in6)); + sa->sin6_family = AF_INET6; + sa->sin6_port = htons(port); + tst_get_in6_addr(ip_str, &sa->sin6_addr); +} + +void tst_init_sockaddr_inet6_bin(struct sockaddr_in6 *sa, const struct in6_addr *ip_val, uint16_t port) +{ + memset(sa, 0, sizeof(struct sockaddr_in6)); + sa->sin6_family = AF_INET6; + sa->sin6_port = htons(port); + memcpy(&sa->sin6_addr, ip_val, sizeof(struct in6_addr)); +} + +void safe_getaddrinfo(const char *file, const int lineno, const char *src_addr, + const char *port, const struct addrinfo *hints, + struct addrinfo **addr_info) +{ + int err = getaddrinfo(src_addr, port, hints, addr_info); + + if (err) + tst_brk(TBROK, "%s:%d: getaddrinfo failed, %s", file, lineno, + gai_strerror(err)); + + if (!*addr_info) + tst_brk(TBROK, "%s:%d: failed to get the address", file, lineno); +} |