diff options
Diffstat (limited to 'lib/libatm')
| -rw-r--r-- | lib/libatm/Makefile | 41 | ||||
| -rw-r--r-- | lib/libatm/atm_addr.c | 328 | ||||
| -rw-r--r-- | lib/libatm/cache_key.c | 105 | ||||
| -rw-r--r-- | lib/libatm/ioctl_subr.c | 461 | ||||
| -rw-r--r-- | lib/libatm/ip_addr.c | 160 | ||||
| -rw-r--r-- | lib/libatm/ip_checksum.c | 92 | ||||
| -rw-r--r-- | lib/libatm/libatm.h | 117 | ||||
| -rw-r--r-- | lib/libatm/timer.c | 258 |
8 files changed, 1562 insertions, 0 deletions
diff --git a/lib/libatm/Makefile b/lib/libatm/Makefile new file mode 100644 index 0000000..921d3ff --- /dev/null +++ b/lib/libatm/Makefile @@ -0,0 +1,41 @@ +# =================================== +# HARP | Host ATM Research Platform +# =================================== +# +# This Host ATM Research Platform ("HARP") file (the "Software") is +# made available by Network Computing Services, Inc. ("NetworkCS") +# "AS IS". NetworkCS does not provide maintenance, improvements or +# support of any kind. +# +# NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, +# INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY +# AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE +# SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. +# In no event shall NetworkCS be responsible for any damages, including +# but not limited to consequential damages, arising from or relating to +# any use of the Software or related support. +# +# Copyright 1994-1998 Network Computing Services, Inc. +# +# Copies of this Software may be made, however, the above copyright +# notice must be reproduced on all copies. +# +# @(#) $Id: Makefile,v 1.5 1998/07/10 16:01:58 jpt Exp $ +# $FreeBSD$ + +LIB= atm +SHLIB_MAJOR= 5 +SHLIBDIR?= /lib +SRCS= atm_addr.c cache_key.c ioctl_subr.c ip_addr.c ip_checksum.c timer.c +INCS= libatm.h + +DPADD= ${LIBMD} +LDADD= -lmd + +.if ${MACHINE_ARCH} == "arm" +WARNS?= 3 +.else +WARNS?= 6 +.endif + +.include <bsd.lib.mk> diff --git a/lib/libatm/atm_addr.c b/lib/libatm/atm_addr.c new file mode 100644 index 0000000..f4c65f2 --- /dev/null +++ b/lib/libatm/atm_addr.c @@ -0,0 +1,328 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#ifndef lint +#if 0 /* original (broken) import id */ +static char *RCSid = "@(#) $Id: atm_addr.c,v 1.1 1998/07/09 21:45:18 johnc Exp $"; +#endif +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * ATM address utility functions + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netatm/port.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include <stdio.h> +#include <string.h> + +#include "libatm.h" + +extern char *prog; + +/* + * Get NSAP, NSAP prefix or MAC address + * + * Arguments: + * in pointer to an address in ASCII + * out pointer to a buffer for the converted address + * len the length of the output buffer + * + * Returns: + * 0 error in format + * len the length of the data in the output buffer + * + */ +int +get_hex_atm_addr(const char *in, u_char *out, int len) +{ + int c_type, c_value, i, out_len, state, val = 0; + + /* + * Character table + */ + static struct { + char c; + int type; + int value; + } char_table[] = { + {'.', 0, 0}, /* Type 0 -- period */ + {':', 0, 0}, /* Type 0 -- colon */ + {'0', 1, 0}, /* Type 1 -- hex digit */ + {'1', 1, 1}, + {'2', 1, 2}, + {'3', 1, 3}, + {'4', 1, 4}, + {'5', 1, 5}, + {'6', 1, 6}, + {'7', 1, 7}, + {'8', 1, 8}, + {'9', 1, 9}, + {'a', 1, 10}, + {'b', 1, 11}, + {'c', 1, 12}, + {'d', 1, 13}, + {'e', 1, 14}, + {'f', 1, 15}, + {'A', 1, 10}, + {'B', 1, 11}, + {'C', 1, 12}, + {'D', 1, 13}, + {'E', 1, 14}, + {'F', 1, 15}, + {'\0', 2, 0}, /* Type 2 -- end of input */ + }; + + /* + * State table + */ + static struct { + int action; + int state; + } state_table[3][3] = { + /* Period Hex End */ + { { 0, 0 }, { 1, 1 }, { 2, 0} }, /* Init */ + { { 4, 0 }, { 3, 2 }, { 4, 0} }, /* C1 */ + { { 0, 2 }, { 1, 1 }, { 2, 0} }, /* C2 */ + }; + + /* + * Initialize + */ + state = 0; + out_len = 0; + if (!strncasecmp(in, "0x", 2)) { + in += 2; + } + + /* + * Loop through input until state table says to return + */ + while (1) { + /* + * Get the character type and value + */ + for (i=0; char_table[i].c; i++) + if (char_table[i].c == *in) + break; + if (char_table[i].c != *in) + return(0); + c_type = char_table[i].type; + c_value = char_table[i].value; + + /* + * Process next character based on state and type + */ + switch(state_table[state][c_type].action) { + case 0: + /* + * Ignore the character + */ + break; + + case 1: + /* + * Save the character's value + */ + val = c_value; + break; + + case 2: + /* + * Return the assembled NSAP + */ + return(out_len); + + case 3: + /* + * Assemble and save the output byte + */ + val = val << 4; + val += c_value; + out[out_len] = (u_char) val; + out_len++; + if (out_len > len) + (void)fprintf(stderr, "%s() out_len > len (%d > %d)\n", + __func__, out_len, len); + + break; + + case 4: + /* + * Invalid input sequence + */ + return(0); + + default: + return(0); + } + + /* + * Set the next state and go on to the next character + */ + state = state_table[state][c_type].state; + in++; + } +} + + +/* + * Format an ATM address into a string + * + * Arguments: + * addr pointer to an atm address + * + * Returns: + * none + * + */ +char * +format_atm_addr(const Atm_addr *addr) +{ + int i; + const char *nsap_format; + const Atm_addr_nsap *atm_nsap; + const Atm_addr_e164 *atm_e164; + const Atm_addr_spans *atm_spans; + const Atm_addr_pvc *atm_pvc; + static char str[256]; + union { + int w; + char c[4]; + } u1, u2; + + static const char nsap_format_DCC[] = "0x%02x.%02x%02x.%02x.%02x%02x%02x.%02x%02x.%02x%02x.%02x%02x.%02x%02x%02x%02x%02x%02x.%02x"; + static const char nsap_format_ICD[] = "0x%02x.%02x%02x.%02x.%02x%02x%02x.%02x%02x.%02x%02x.%02x%02x.%02x%02x%02x%02x%02x%02x.%02x"; + static const char nsap_format_E164[] = "0x%02x.%02x%02x%02x%02x%02x%02x%02x%02x.%02x%02x.%02x%02x.%02x%02x%02x%02x%02x%02x.%02x"; + + /* + * Clear the returned string + */ + bzero(str, sizeof(str)); + strcpy(str, "-"); + + /* + * Print format is determined by address type + */ + switch (addr->address_format) { + case T_ATM_ENDSYS_ADDR: + atm_nsap = (const Atm_addr_nsap *)addr->address; + switch(atm_nsap->aan_afi) { + default: + case AFI_DCC: + nsap_format = nsap_format_DCC; + break; + case AFI_ICD: + nsap_format = nsap_format_ICD; + break; + case AFI_E164: + nsap_format = nsap_format_E164; + break; + } + sprintf(str, nsap_format, + atm_nsap->aan_afi, + atm_nsap->aan_afspec[0], + atm_nsap->aan_afspec[1], + atm_nsap->aan_afspec[2], + atm_nsap->aan_afspec[3], + atm_nsap->aan_afspec[4], + atm_nsap->aan_afspec[5], + atm_nsap->aan_afspec[6], + atm_nsap->aan_afspec[7], + atm_nsap->aan_afspec[8], + atm_nsap->aan_afspec[9], + atm_nsap->aan_afspec[10], + atm_nsap->aan_afspec[11], + atm_nsap->aan_esi[0], + atm_nsap->aan_esi[1], + atm_nsap->aan_esi[2], + atm_nsap->aan_esi[3], + atm_nsap->aan_esi[4], + atm_nsap->aan_esi[5], + atm_nsap->aan_sel); + break; + + case T_ATM_E164_ADDR: + atm_e164 = (const Atm_addr_e164 *)addr->address; + for(i=0; i<addr->address_length; i++) { + sprintf(&str[strlen(str)], "%c", + atm_e164->aae_addr[i]); + } + break; + + case T_ATM_SPANS_ADDR: + /* + * Print SPANS address as two words, xxxx.yyyy + */ + atm_spans = (const Atm_addr_spans *)addr->address; + u1.c[0] = atm_spans->aas_addr[0]; + u1.c[1] = atm_spans->aas_addr[1]; + u1.c[2] = atm_spans->aas_addr[2]; + u1.c[3] = atm_spans->aas_addr[3]; + + u2.c[0] = atm_spans->aas_addr[4]; + u2.c[1] = atm_spans->aas_addr[5]; + u2.c[2] = atm_spans->aas_addr[6]; + u2.c[3] = atm_spans->aas_addr[7]; + + if (!(u1.w == 0 && u2.w == 0)) + sprintf(str, "0x%08lx.%08lx", + (u_long)ntohl(u1.w), (u_long)ntohl(u2.w)); + break; + + case T_ATM_PVC_ADDR: + /* + * Print PVC as VPI, VCI + */ + atm_pvc = (const Atm_addr_pvc *)addr->address; + sprintf(str, "%d, %d", + ATM_PVC_GET_VPI(atm_pvc), + ATM_PVC_GET_VCI(atm_pvc)); + break; + + case T_ATM_ABSENT: + default: + break; + } + + return(str); +} diff --git a/lib/libatm/cache_key.c b/lib/libatm/cache_key.c new file mode 100644 index 0000000..7bfeac2 --- /dev/null +++ b/lib/libatm/cache_key.c @@ -0,0 +1,105 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * SCSP cache key computation + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netatm/port.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include <md5.h> +#include <string.h> + +#include "libatm.h" + +/* + * Compute an SCSP cache key + * + * Arguments: + * ap pointer to an Atm_addr with the ATM address + * ip pointer to a struct in_addr with the IP address + * ol the required length of the cache key + * op pointer to receive cache key + * + * Returns: + * none + * + */ +void +scsp_cache_key(const Atm_addr *ap, const struct in_addr *ip, int ol, char *op) +{ + int i, len; + char buff[32]; + unsigned char digest[16]; + MD5_CTX context; + + /* + * Initialize + */ + bzero(buff, sizeof(buff)); + + /* + * Copy the addresses into a buffer for MD5 computation + */ + len = sizeof(struct in_addr) + ap->address_length; + if (len > (int)sizeof(buff)) + len = sizeof(buff); + bcopy(ip, buff, sizeof(struct in_addr)); + bcopy(ap->address, &buff[sizeof(struct in_addr)], + len - sizeof(struct in_addr)); + + /* + * Compute the MD5 digest of the combined IP and ATM addresses + */ + MD5Init(&context); + MD5Update(&context, buff, len); + MD5Final(digest, &context); + + /* + * Fold the 16-byte digest to the required length + */ + bzero((caddr_t)op, ol); + for (i = 0; i < 16; i++) { + op[i % ol] = op[i % ol] ^ digest[i]; + } +} diff --git a/lib/libatm/ioctl_subr.c b/lib/libatm/ioctl_subr.c new file mode 100644 index 0000000..f7b15f1 --- /dev/null +++ b/lib/libatm/ioctl_subr.c @@ -0,0 +1,461 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * IOCTL subroutines + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/sockio.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netatm/port.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "libatm.h" + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +extern char *prog; + + +/* + * Issue an informational IOCTL + * + * The user fills out the opcode and any subtype information. This + * routine will allocate a buffer and issue the IOCTL. If the request + * fails because the buffer wasn't big enough, this routine will double + * the buffer size and retry the request repeatedly. The buffer must + * be freed by the caller. + * + * Arguments: + * req pointer to an ATM information request IOCTL structure + * buf_len length of buffer to be allocated + * + * Returns: + * -1 error encountered (reason in errno) + * int length of the returned VCC information + * + */ +ssize_t +do_info_ioctl(struct atminfreq *req, size_t buf_len) +{ + int rc, s; + caddr_t buf; + + /* + * Open a socket for the IOCTL + */ + s = socket(AF_ATM, SOCK_DGRAM, 0); + if (s < 0) { + return(-1); + } + + /* + * Get memory for returned information + */ +mem_retry: + buf = malloc(buf_len); + if (buf == NULL) { + errno = ENOMEM; + return(-1); + } + bzero(buf, buf_len); + + /* + * Set the buffer address and length in the request + */ + req->air_buf_addr = buf; + req->air_buf_len = buf_len; + + /* + * Issue the IOCTL + */ + rc = ioctl(s, AIOCINFO, (caddr_t)req); + if (rc) { + free(buf); + if (errno == ENOSPC) { + buf_len = buf_len * 2; + goto mem_retry; + } + return(-1); + } + (void)close(s); + /* + * Set a pointer to the returned info in the request + * and return its length + */ + req->air_buf_addr = buf; + return(req->air_buf_len); +} + + +/* + * Get VCC information + * + * Arguments: + * intf pointer to interface name (or null string) + * vccp pointer to a pointer to a struct air_vcc_rsp for the + * address of the returned VCC information + * + * Returns: + * int length of the retuned VCC information + * + */ +ssize_t +get_vcc_info(const char *intf, struct air_vcc_rsp **vccp) +{ + size_t buf_len = sizeof(struct air_vcc_rsp) * 100; + struct atminfreq air; + + /* + * Initialize IOCTL request + */ + air.air_opcode = AIOCS_INF_VCC; + bzero(air.air_vcc_intf, sizeof(air.air_vcc_intf)); + if (intf != NULL && strlen(intf) != 0) + strncpy(air.air_vcc_intf, intf, IFNAMSIZ - 1); + + buf_len = do_info_ioctl(&air, buf_len); + + /* + * Return a pointer to the VCC info and its length + */ + *vccp = (struct air_vcc_rsp *)(void *)air.air_buf_addr; + return(buf_len); +} + + +/* + * Get subnet mask + * + * Arguments: + * intf pointer to an interface name + * mask pointer to a struct sockaddr_in to receive the mask + * + * Returns: + * 0 good completion + * -1 error + * + */ +int +get_subnet_mask(const char *intf, struct sockaddr_in *mask) +{ + int rc, s; + struct ifreq req; + struct sockaddr_in *ip_mask; + + /* + * Check parameters + */ + if (!intf || !mask || + strlen(intf) == 0 || + strlen(intf) > IFNAMSIZ-1) + return(-1); + + /* + * Open a socket for the IOCTL + */ + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s < 0) + return(-1); + + /* + * Set up and issue the IOCTL + */ + bzero(&req, sizeof(req)); + strcpy(req.ifr_name, intf); + rc = ioctl(s, SIOCGIFNETMASK, (caddr_t)&req); + (void)close(s); + if (rc) + return(-1); + + /* + * Give the answer back to the caller + */ + ip_mask = (struct sockaddr_in *)(void *)&req.ifr_addr; + *mask = *ip_mask; + mask->sin_family = AF_INET; + + return(0); +} + + +/* + * Get an interface's MTU + * + * Arguments: + * intf pointer to an interface name + * mtu pointer to an int to receive the MTU + * + * Returns: + * >= 0 interface MTU + * -1 error + * + */ +int +get_mtu(const char *intf) +{ + int rc, s; + struct ifreq req; + + /* + * Check parameters + */ + if (!intf || strlen(intf) == 0 || + strlen(intf) > IFNAMSIZ-1) + return(-1); + + /* + * Open a socket for the IOCTL + */ + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s < 0) + return(-1); + + /* + * Set up and issue the IOCTL + */ + bzero(&req, sizeof(req)); + strcpy(req.ifr_name, intf); + rc = ioctl(s, SIOCGIFMTU, (caddr_t)&req); + (void)close(s); + + /* + * Set the appropriate return value + */ + if (rc) + return(-1); + else + return(req.ifr_mtu); +} + + +/* + * Verify netif name + * + * This routine issues an IOCTL to check whether the passed string is + * a valid network interface name. + * + * Arguments: + * req pointer to an ATM information request IOCTL structure + * + * Returns: + * -1 error encountered + * FALSE (0) the string is not a NIF name + * TRUE (> 0) the string is a valid NIF name + * + */ +int +verify_nif_name(const char *name) +{ + int rc, s; + struct atminfreq air; + struct air_netif_rsp *nif_info; + + /* + * Check whether name is of a valid length + */ + if (strlen(name) > IFNAMSIZ - 1 || + strlen(name) < 1) { + return(FALSE); + } + + /* + * Open a socket for the IOCTL + */ + s = socket(AF_ATM, SOCK_DGRAM, 0); + if (s < 0) { + return(-1); + } + + /* + * Get memory for returned information + */ + nif_info = malloc(sizeof(struct air_netif_rsp)); + if (nif_info == NULL) { + errno = ENOMEM; + return(-1); + } + bzero(nif_info, sizeof(struct air_netif_rsp)); + + /* + * Set up the request + */ + air.air_opcode = AIOCS_INF_NIF; + air.air_buf_addr = (caddr_t)nif_info; + air.air_buf_len = sizeof(struct air_netif_rsp); + bzero(air.air_netif_intf, sizeof(air.air_netif_intf)); + strcpy(air.air_netif_intf, name); + + /* + * Issue the IOCTL + */ + rc = ioctl(s, AIOCINFO, (caddr_t)&air); + free(nif_info); + (void)close(s); + + /* + * Base return value on IOCTL return code + */ + if (rc) + return(FALSE); + else + return(TRUE); +} + +/* + * Get Config information + * + * Arguments: + * intf pointer to interface name (or null string) + * cfgp pointer to a pointer to a struct air_cfg_rsp for the + * address of the returned Config information + * + * Returns: + * int length of returned Config information + * + */ +ssize_t +get_cfg_info(const char *intf, struct air_cfg_rsp **cfgp) +{ + size_t buf_len = sizeof(struct air_cfg_rsp) * 4; + struct atminfreq air; + + /* + * Initialize IOCTL request + */ + air.air_opcode = AIOCS_INF_CFG; + bzero ( air.air_cfg_intf, sizeof(air.air_cfg_intf)); + if ( intf != NULL && strlen(intf) != 0 ) + strncpy(air.air_cfg_intf, intf, IFNAMSIZ - 1); + + buf_len = do_info_ioctl ( &air, buf_len ); + + /* + * Return a pointer to the Config info and its length + */ + *cfgp = (struct air_cfg_rsp *)(void *)air.air_buf_addr; + return ( buf_len ); + +} + +/* + * Get Physical Interface information + * + * Arguments: + * intf pointer to interface name (or null string) + * intp pointer to a pointer to a struct air_cfg_rsp for the + * address of the returned Config information + * + * Returns: + * int length of returned Config information + * + */ +ssize_t +get_intf_info(const char *intf, struct air_int_rsp **intp) +{ + size_t buf_len = sizeof(struct air_int_rsp) * 4; + struct atminfreq air; + + /* + * Initialize IOCTL request + */ + air.air_opcode = AIOCS_INF_INT; + bzero ( air.air_int_intf, sizeof(air.air_int_intf)); + if ( intf != NULL && strlen(intf) != 0 ) + strncpy(air.air_int_intf, intf, IFNAMSIZ - 1); + + buf_len = do_info_ioctl ( &air, buf_len ); + + /* + * Return a pointer to the Physical Interface info and its length + */ + *intp = (struct air_int_rsp *)(void *)air.air_buf_addr; + return ( buf_len ); + +} + + +/* + * Get Netif information + * + * Arguments: + * intf pointer to interface name (or null string) + * netp pointer to a pointer to a struct air_netif_rsp for the + * address of the returned Netif information + * + * Returns: + * int length of returned Netif information + * + */ +ssize_t +get_netif_info(const char *intf, struct air_netif_rsp **netp) +{ + size_t buf_len = sizeof(struct air_netif_rsp) * 10; + struct atminfreq air; + + /* + * Initialize IOCTL request + */ + air.air_opcode = AIOCS_INF_NIF; + bzero ( air.air_int_intf, sizeof(air.air_int_intf) ); + if ( intf != NULL && strlen(intf) != 0 ) + strncpy(air.air_int_intf, intf, IFNAMSIZ - 1); + + buf_len = do_info_ioctl ( &air, buf_len ); + + /* + * Return a pointer to the Netif info and its length + */ + *netp = (struct air_netif_rsp *) air.air_buf_addr; + return ( buf_len ); + +} diff --git a/lib/libatm/ip_addr.c b/lib/libatm/ip_addr.c new file mode 100644 index 0000000..d3a5276 --- /dev/null +++ b/lib/libatm/ip_addr.c @@ -0,0 +1,160 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * IP address utilities + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <stdio.h> +#include <net/if.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netatm/port.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include <netdb.h> +#include <string.h> + +#include "libatm.h" + +/* + * Get IP address + * + * Return an IP address in a socket address structure, given a character + * string with a domain name or a dotted decimal number. + * + * Arguments: + * p pointer to a host name or IP address + * + * Returns: + * null error was encountered + * struct sockaddr_in * a pointer to a socket address with the + * requested IP address + * + */ +struct sockaddr_in * +get_ip_addr(const char *p) +{ + struct hostent *ip_host; + static struct sockaddr_in s; + + /* + * Get IP address of specified host name + */ + bzero(&s, sizeof(s)); + s.sin_family = AF_INET; + if (p[0] >= '0' && p[0] <= '9') { + /* + * IP address is in dotted decimal format + */ + if ((s.sin_addr.s_addr = inet_addr(p)) == INADDR_NONE) { + return((struct sockaddr_in *)0); + } + } else { + /* + * Host name is in domain name system format + */ + ip_host = gethostbyname(p); + if (!ip_host || + ip_host->h_addrtype != AF_INET) { + return((struct sockaddr_in *)0); + } + memcpy(&s.sin_addr.s_addr, ip_host->h_addr_list[0], + sizeof(s.sin_addr.s_addr)); + } + return(&s); +} + + +/* + * Format an IP address + * + * Return a text-formatted string with an IP address and domain name + * given a sockaddr_in with an IP address. + * + * Arguments: + * addr pointer to sockaddr_in with an IP address + * + * Returns: + * char * pointer to a text-formatted string + * + */ +const char * +format_ip_addr(const struct in_addr *addr) +{ + static char host_name[MAXHOSTNAMELEN + 18]; + char *ip_num; + struct hostent *ip_host; + + /* + * Initialize + */ + bzero(host_name, sizeof(host_name)); + + /* + * Check for a zero address + */ + if (!addr || addr->s_addr == 0) { + return("-"); + } + + /* + * Get address in dotted decimal format + */ + ip_num = inet_ntoa(*addr); + + /* + * Look up name in DNS + */ + ip_host = gethostbyaddr((const char *)addr, sizeof(addr), AF_INET); + if (ip_host && ip_host->h_name && strlen(ip_host->h_name)) { + /* + * Return host name followed by dotted decimal address + */ + snprintf(host_name, sizeof(host_name), "%s (%s)", + ip_host->h_name, ip_num); + return (host_name); + } else { + /* + * No host name -- just return dotted decimal address + */ + return(ip_num); + } +} diff --git a/lib/libatm/ip_checksum.c b/lib/libatm/ip_checksum.c new file mode 100644 index 0000000..2881c24 --- /dev/null +++ b/lib/libatm/ip_checksum.c @@ -0,0 +1,92 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * IP checksum computation + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netatm/port.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include "libatm.h" + +/* + * Compute an IP checksum + * + * This code was taken from RFC 1071. + * + * "The following "C" code algorithm computes the checksum with an inner + * loop that sums 16 bits at a time in a 32-bit accumulator." + * + * Arguments: + * addr pointer to the buffer whose checksum is to be computed + * count number of bytes to include in the checksum + * + * Returns: + * the computed checksum + * + */ +short +ip_checksum(const char *addr, int count) +{ + /* Compute Internet Checksum for "count" bytes + * beginning at location "addr". + */ + long sum = 0; + + while( count > 1 ) { + /* This is the inner loop */ + sum += ntohs(* (const unsigned short *)(const void *)addr); + addr += sizeof(unsigned short); + count -= sizeof(unsigned short); + } + + /* Add left-over byte, if any */ + if( count > 0 ) + sum += * (const unsigned char *) addr; + + /* Fold 32-bit sum to 16 bits */ + while (sum>>16) + sum = (sum & 0xffff) + (sum >> 16); + + return((short)~sum); +} diff --git a/lib/libatm/libatm.h b/lib/libatm/libatm.h new file mode 100644 index 0000000..1c2088f --- /dev/null +++ b/lib/libatm/libatm.h @@ -0,0 +1,117 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + * + * @(#) $FreeBSD$ + * + */ + +/* + * User Space Library Functions + * ---------------------------- + * + * Library functions + * + */ + +#ifndef _HARP_LIBHARP_H +#define _HARP_LIBHARP_H + +/* + * Start a HARP user-space timer + * + * tp pointer to timer control block + * time number of seconds for timer to run + * fp pointer to function to call at expiration + */ +#define HARP_TIMER(tp, time, fp) \ +{ \ + (tp)->ht_ticks = (time); \ + (tp)->ht_mark = 0; \ + (tp)->ht_func = (fp); \ + LINK2HEAD((tp), Harp_timer, harp_timer_head, ht_next); \ +} + +/* + * Cancel a HARP user-space timer + * + * tp pointer to timer control block + */ +#define HARP_CANCEL(tp) \ +{ \ + UNLINK((tp), Harp_timer, harp_timer_head, ht_next); \ +} + + +/* + * HARP user-space timer control block + */ +struct harp_timer { + struct harp_timer *ht_next; /* Timer chain */ + int ht_ticks; /* Seconds till exp */ + int ht_mark; /* Processing flag */ + void (*ht_func)(struct harp_timer *); /* Function to call */ +}; +typedef struct harp_timer Harp_timer; + + +/* + * Externally-visible variables and functions + */ + +/* atm_addr.c */ +extern int get_hex_atm_addr(const char *, u_char *, int); +extern char *format_atm_addr(const Atm_addr *); + +/* cache_key.c */ +extern void scsp_cache_key(const Atm_addr *, + const struct in_addr *, int, char *); + +/* ioctl_subr.c */ +extern ssize_t do_info_ioctl(struct atminfreq *, size_t); +extern ssize_t get_vcc_info(const char *, struct air_vcc_rsp **); +extern int get_subnet_mask(const char *, struct sockaddr_in *); +extern int get_mtu(const char *); +extern int verify_nif_name(const char *); +extern ssize_t get_cfg_info(const char *, struct air_cfg_rsp **); +extern ssize_t get_intf_info(const char *, struct air_int_rsp **); +extern ssize_t get_netif_info(const char *, struct air_netif_rsp **); + +/* ip_addr.c */ +extern struct sockaddr_in *get_ip_addr(const char *); +extern const char *format_ip_addr(const struct in_addr *); + +/* ip_checksum.c */ +extern short ip_checksum(const char *, int); + +/* timer.c */ +extern Harp_timer *harp_timer_head; +extern int harp_timer_exec; +extern void timer_proc(void); +extern int init_timer(void); +extern int block_timer(void); +extern void enable_timer(int); + + +#endif /* _HARP_LIBHARP_H */ diff --git a/lib/libatm/timer.c b/lib/libatm/timer.c new file mode 100644 index 0000000..1870e55 --- /dev/null +++ b/lib/libatm/timer.c @@ -0,0 +1,258 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * User Space Library Functions + * ---------------------------- + * + * Timer functions + * + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netatm/port.h> +#include <netatm/queue.h> +#include <netatm/atm.h> +#include <netatm/atm_if.h> +#include <netatm/atm_sap.h> +#include <netatm/atm_sys.h> +#include <netatm/atm_ioctl.h> + +#include <errno.h> +#include <signal.h> + +#include "libatm.h" + +Harp_timer *harp_timer_head; +int harp_timer_exec; + + +/* + * Process a HARP timer tick + * + * This function is called via the SIGALRM signal. It increments + * harp_timer_exec. The user should check this flag frequently and + * call timer_proc when it is set. + * + * Arguments: + * None + * + * Returns: + * None + * + */ +static void +timer_tick(void) +{ + /* + * Bump the timer flag + */ + harp_timer_exec++; +} + + +/* + * Process HARP timers + * + * This function is called after a SIGALRM signal is posted. It runs + * down the list of timer entries, calling the specified functions + * for any timers that have expired. + * + * Arguments: + * None + * + * Returns: + * None + * + */ +void +timer_proc(void) +{ + Harp_timer *htp; + void (*f)(Harp_timer *); + + /* + * Reset marks in all timers on the queue + */ + for (htp = harp_timer_head; htp; htp = htp->ht_next) { + htp->ht_mark = -1; + } + + /* + * Run through timer chain decrementing each timer. + * If an expired timer is found, take the timer block + * off the chain and call the specified function. A + * timer's action can result in other timers being + * cancelled (taken off the queue), so every time we + * call a user function, we start over from the top of + * the list. + */ +timer_cont: + for (htp = harp_timer_head; htp; htp = htp->ht_next) { + /* + * Make sure we only process each entry once and + * don't process entries that are put on the queue + * by user functions we call for this tick + */ + if (htp->ht_mark == -1) { + /* + * Decrement the timer and mark that we've + * processed the entry + */ + htp->ht_ticks -= harp_timer_exec; + htp->ht_mark = 1; + + /* + * Check whether the timer is expired + */ + if (htp->ht_ticks <= 0) { + /* + * Unlink the timer block and call + * the user function + */ + f = htp->ht_func; + UNLINK(htp, Harp_timer, harp_timer_head, + ht_next); + f(htp); + + /* + * Start over + */ + goto timer_cont; + } + } + } + + /* + * Reset the timer exec flag + */ + harp_timer_exec = 0; +} + + +/* + * Start the timer + * + * Set up the SIGALRM signal handler and set up the real-time + * timer to tick once per second. + * + * Arguments: + * None + * + * Returns: + * 0 success + * errno reason for failure + * + */ +int +init_timer() +{ + int rc = 0; + struct itimerval timeval; + + /* + * Clear the timer flag + */ + harp_timer_exec = 0; + + /* + * Set up signal handler + */ + if (signal(SIGALRM, (sig_t)timer_tick) == SIG_ERR) { + return(errno); + } + + /* + * Start timer + */ + timeval.it_value.tv_sec = 1; + timeval.it_value.tv_usec = 0; + timeval.it_interval.tv_sec = 1; + timeval.it_interval.tv_usec = 0; + + if (setitimer(ITIMER_REAL, &timeval, + (struct itimerval *)0) == -1) { + rc = errno; + (void)signal(SIGALRM, SIG_DFL); + } + + return(rc); +} + + +/* + * Block timers from firing + * + * Block the SIGALRM signal. + * + * Arguments: + * None + * + * Returns: + * mask the previous blocked signal mask + * + */ +int +block_timer() +{ + /* + * Block the SIGALRM signal + */ + return(sigblock(sigmask(SIGALRM))); +} + + +/* + * Re-enable timers + * + * Restore the signal mask (presumably one that was returned by + * block_timer). + * + * Arguments: + * mask the signal mask to be restored + * + * Returns: + * mask the previous blocked signal mask + * + */ +void +enable_timer(mask) + int mask; +{ + /* + * Set the signal mask + */ + sigsetmask(mask); + + return; +} |
