dhcp.rar_DHCP android_android_dhcp_dhcp server client

/************************************************************************* * Copyright(c) 2009, xxxcorporation * All rights reserved * dhcp_client.c : dhcp client c file * version: 1.0 * author: ywg * time: 2009-02-07 * history: none **************************************************************************/ #include "dhcp_config.h" #include "dhcp_type.h" #include "dhcp_error.h" #include "dhcp_client.h" #include "dhcp_system.h" #include "ip_cfg.h" #include "drv_os.h" struct dhcp_opt60 { int our_len; int you_len; char our_optbuf[32]; char you_optbuf[32]; }; //#define DHCP_DEBUG printf //#define DHCP_VENDOR_CLASS_ID_OPTION_NEEDED 1 #define DHCP_VENDOR_SPECIFIC_INFO_OPTION_NEEDED 1 //#define DHCP_DO_ARP_CHECK 1 static int DHCP_VENDOR_CLASS_ID_OPTION_NEEDED=0; static int DHCP_OUR_OPTION60_NEEDED=0; static int DHCP_YOU_OPTION60_NEEDED=0; static int DHCP_DO_ARP_CHECK=0; static u32_t xid = 0xABCD0000; static int state; static int dhcp_timing; static int dhcp_time_sw=0; static int dhcp_time_bisc = 500; /* dhcp timer 500us */ static char current_if[16]; static struct dhcp_info dhcp_desp; static struct dhcp_opt60 dhcp_opt60; static char * dhcp_msg_queue; static pthread_mutex_t dhcp_locker; static DRVOS_Sem_t *dhcp_sem; #if defined(__LINUX_SYS__) static u32_t msg_project_id=2; static DRVOS_MsgQueue_p msg_queue_id; #endif void GetDHCP(struct dhcp_msg *hdr,void *p, int optionlen) { int i; u8_t * tmpayload; UIN16BIT temp; UINT32BIT temp32; //memset(hdr,0, DHCP_MSG_LEN+4); memset(hdr,0, sizeof(struct dhcp_msg)); tmpayload = (u8_t*)p; hdr->op = *(tmpayload); hdr->htype = *(tmpayload + 1); hdr->hlen = *(tmpayload + 2); hdr->hops = *(tmpayload + 3); temp32.byte.ucByte0 = *(tmpayload+4); temp32.byte.ucByte1 = *(tmpayload+5); temp32.byte.ucByte2 = *(tmpayload+6); temp32.byte.ucByte3 = *(tmpayload+7); hdr->xid = temp32.uiWord32; temp.byte.ucByte0 = *(tmpayload+8); temp.byte.ucByte1 = *(tmpayload+9); hdr->secs = temp.uiWord16; temp.byte.ucByte0 = *(tmpayload+10); temp.byte.ucByte1 = *(tmpayload+11); hdr->flags = temp.uiWord16; temp32.byte.ucByte0 = *(tmpayload+12); temp32.byte.ucByte1 = *(tmpayload+13); temp32.byte.ucByte2 = *(tmpayload+14); temp32.byte.ucByte3 = *(tmpayload+15); hdr->ciaddr.addr = temp32.uiWord32; temp32.byte.ucByte0 = *(tmpayload+16); temp32.byte.ucByte1 = *(tmpayload+17); temp32.byte.ucByte2 = *(tmpayload+18); temp32.byte.ucByte3 = *(tmpayload+19); hdr->yiaddr.addr = temp32.uiWord32; temp32.byte.ucByte0 = *(tmpayload+20); temp32.byte.ucByte1 = *(tmpayload+21); temp32.byte.ucByte2 = *(tmpayload+22); temp32.byte.ucByte3 = *(tmpayload+23); hdr->siaddr.addr = temp32.uiWord32; temp32.byte.ucByte0 = *(tmpayload+24); temp32.byte.ucByte1 = *(tmpayload+25); temp32.byte.ucByte2 = *(tmpayload+26); temp32.byte.ucByte3 = *(tmpayload+27); hdr->giaddr.addr = temp32.uiWord32; memcpy(hdr->chaddr, tmpayload + 28, DHCP_CHADDR_LEN); memcpy(hdr->sname, tmpayload + 28+DHCP_CHADDR_LEN, DHCP_SNAME_LEN); memcpy(hdr->file, tmpayload + 28+DHCP_CHADDR_LEN+DHCP_SNAME_LEN, DHCP_FILE_LEN); temp32.byte.ucByte0 = *(tmpayload+236); temp32.byte.ucByte1 = *(tmpayload+237); temp32.byte.ucByte2 = *(tmpayload+238); temp32.byte.ucByte3 = *(tmpayload+239); hdr->cookie = temp32.uiWord32; /* copy options */ for(i=0; i<optionlen; i++){ if(i > DHCP_OPTIONS_LEN){ DHCP_DEBUG("GetDHCP : copy options error max_len=%d, fact_len=%d\n", DHCP_OPTIONS_LEN, optionlen); } hdr->options[i] = *(tmpayload + 240 + i); } } void SetDHCP(struct dhcp_msg *hdr,void *p,int optionlen) { int i; u8_t * tmpayload; UIN16BIT temp; UINT32BIT temp32; tmpayload = (u8_t*)p; *(tmpayload) = hdr->op; *(tmpayload + 1) = hdr->htype; *(tmpayload + 2) = hdr->hlen; *(tmpayload + 3) = hdr->hops; temp32.uiWord32 = hdr->xid; *(tmpayload+4) = temp32.byte.ucByte0; *(tmpayload+5) = temp32.byte.ucByte1; *(tmpayload+6) = temp32.byte.ucByte2; *(tmpayload+7) = temp32.byte.ucByte3; temp.uiWord16 = hdr->secs; *(tmpayload+8) = temp.byte.ucByte0; *(tmpayload+9) = temp.byte.ucByte1; temp.uiWord16 = hdr->flags; *(tmpayload+10) = temp.byte.ucByte0; *(tmpayload+11) = temp.byte.ucByte1; temp32.uiWord32 = hdr->ciaddr.addr; *(tmpayload+12) = temp32.byte.ucByte0; *(tmpayload+13) = temp32.byte.ucByte1; *(tmpayload+14) = temp32.byte.ucByte2; *(tmpayload+15) = temp32.byte.ucByte3; temp32.uiWord32 = hdr->yiaddr.addr; *(tmpayload+16) = temp32.byte.ucByte0; *(tmpayload+17) = temp32.byte.ucByte1; *(tmpayload+18) = temp32.byte.ucByte2; *(tmpayload+19) = temp32.byte.ucByte3; temp32.uiWord32 = hdr->siaddr.addr; *(tmpayload+20) = temp32.byte.ucByte0; *(tmpayload+21) = temp32.byte.ucByte1; *(tmpayload+22) = temp32.byte.ucByte2; *(tmpayload+23) = temp32.byte.ucByte3; temp32.uiWord32 = hdr->giaddr.addr; *(tmpayload+24) = temp32.byte.ucByte0; *(tmpayload+25) = temp32.byte.ucByte1; *(tmpayload+26) = temp32.byte.ucByte2; *(tmpayload+27) = temp32.byte.ucByte3; memcpy(tmpayload + 28, hdr->chaddr, DHCP_CHADDR_LEN); memcpy(tmpayload + 28+DHCP_CHADDR_LEN, hdr->sname, DHCP_SNAME_LEN); memcpy(tmpayload + 28+DHCP_CHADDR_LEN+DHCP_SNAME_LEN, hdr->file, DHCP_FILE_LEN); temp32.uiWord32 = hdr->cookie; *(tmpayload+236) = temp32.byte.ucByte0; *(tmpayload+237) = temp32.byte.ucByte1; *(tmpayload+238) = temp32.byte.ucByte2; *(tmpayload+239) = temp32.byte.ucByte3; /* copy options */ for(i=0; i<optionlen; i++){ if(i > DHCP_OPTIONS_LEN){ DHCP_DEBUG("SetDHCP : copy options error max_len=%d, fact_len=%d\n", DHCP_OPTIONS_LEN, optionlen); } *(tmpayload + 240 + i) = hdr->options[i]; } } void dhcp_option_cfg() { /* process all avaliable options */ } /* * Concatenate an option type and length field to the outgoing * DHCP message. * */ static void dhcp_option(struct dhcp_info *dhcp, u8_t option_type, u8_t option_len) { dhcp->msg_out->options[dhcp->options_out_len++] = option_type; dhcp->msg_out->options[dhcp->options_out_len++] = option_len; } /* * Concatenate a single byte to the outgoing DHCP message. * */ static void dhcp_option_byte(struct dhcp_info *dhcp, u8_t value) { dhcp->msg_out->options[dhcp->options_out_len++] = value; } static void dhcp_option_short(struct dhcp_info *dhcp, u16_t value) { dhcp->msg_out->options[dhcp->options_out_len++] = (value & 0xff00U) >> 8; dhcp->msg_out->options[dhcp->options_out_len++] = value & 0x00ffU; } static void dhcp_option_long(struct dhcp_info *dhcp, u32_t value) { dhcp->msg_out->options[dhcp->options_out_len++] = (value & 0xff000000UL) >> 24; dhcp->msg_out->options[dhcp->options_out_len++] = (value & 0x00ff0000UL) >> 16; dhcp->msg_out->options[dhcp->options_out_len++] = (value & 0x0000ff00UL) >> 8; dhcp->msg_out->options[dhcp->options_out_len++] = (value & 0x000000ffUL); } /** * Add a DHCP message trailer * * Adds the END option to the DHCP message, and if * necessary, up to three padding bytes. */ static void dhcp_option_trailer(struct dhcp_info *dhcp) { dhcp->msg_out->options[dhcp->options_out_len++] = DHCP_OPTION_END; /* packet is too small, or not 4 byte aligned? */ while ((dhcp->options_out_len < DHCP_MIN_OPTIONS_LEN) || (dhcp->options_out_len & 3)) { /* LWIP_DEBUGF(DHCP_DEBUG,