From: Pierre Habouzit Date: Sun, 13 Jan 2008 20:28:45 +0000 (+0100) Subject: further pop_mx_ng work X-Git-Url: http://git.madism.org/?a=commitdiff_plain;h=370334f0cfae3a5a9fe49b40df22e6753a87ac80;p=apps%2Fmadmutt.git further pop_mx_ng work Signed-off-by: Pierre Habouzit --- diff --git a/lib-mx/pop-new.c b/lib-mx/pop-new.c index 4978f8f..a46cc82 100644 --- a/lib-mx/pop-new.c +++ b/lib-mx/pop-new.c @@ -20,24 +20,51 @@ */ #include +#include #include "pop.h" #include "account.h" #define POP3_PORT 110 #define POP3S_PORT 995 +/* maximal length of the server response (RFC1939) */ +#define POP_CMD_MAXLEN 512 enum pop_state { - POP_NEW, + POP_CONNECTING, + POP_CHECK_CAPA0, + POP_STLS, + POP_CHECK_CAPA1, + POP_AUTHENTICATE, + POP_CHECK_CAPA2, + POP_STAT, POP_READY, }; +typedef enum { + CMD_UNKNOWN, /* unknown whether it is available or not */ + CMD_NOT_AVAILABLE, + CMD_AVAILABLE, +} cmd_status; + typedef struct pop_data_t { int refcnt; enum pop_state state; - volatile job_t *w; - + unsigned multiline : 1; + unsigned known_capa : 1; + unsigned use_stls : 2; + cmd_status cmd_capa : 2; /* optional command CAPA */ + cmd_status cmd_stls : 2; /* optional command STLS */ + cmd_status cmd_uidl : 2; /* optional command UIDL */ + cmd_status cmd_top : 2; /* optional command TOP */ + cmd_status cmd_user : 2; /* optional command USER */ ACCOUNT act; + + char *apop_token; + char *auth_mechs; + + volatile job_t *w; + buffer_t ibuf, obuf; } pop_data_t; static void pop_data_delete(pop_data_t **tp); DO_ARRAY_TYPE(pop_data_t, pop_data); @@ -45,7 +72,7 @@ DO_ARRAY_FUNCS(pop_data_t, pop_data, pop_data_delete); /****************************************************************************/ /* module */ -/****************************************************************************/ +/************************************************************************{{{*/ static pop_data_array conns; @@ -61,8 +88,15 @@ static inline pop_data_t *pop_data_dup(pop_data_t *t) t->refcnt++; return t; } +static void pop_data_reset(pop_data_t *pd) +{ + p_delete(&pd->apop_token); + buffer_reset(&pd->ibuf); + buffer_reset(&pd->obuf); +} static void pop_data_wipe(pop_data_t *pd) { + p_delete(&pd->apop_token); if (pd->w) IGNORE(el_job_release((job_t *)pd->w, EL_KILLED)); } @@ -93,25 +127,163 @@ static __fini void pop_shutdown(void) pop_data_array_wipe(&conns); } -/****************************************************************************/ +/************************************************************************}}}*/ /* pop3 machine */ /****************************************************************************/ +#define POP_CHECK_EOL(w, pd) \ + ({ \ + const char *__eol = strchr((pd)->ibuf.data, '\n'); \ + if (!__eol) { \ + if ((pd)->ibuf.len > POP_CMD_MAXLEN) \ + return el_job_release((w), EL_ERROR); \ + return 0; \ + } \ + __eol + 1; \ + }) + +static int pop_read_banner(job_t *w, pop_data_t *pd) +{ + const char *eol = POP_CHECK_EOL(w, pd); + const char *p, *q; + + if (m_strncmp(pd->ibuf.data, "+OK", 3)) + return el_job_release(w, EL_ERROR); + + p = memchr(pd->ibuf.data, '<', eol - pd->ibuf.data); + if (p && (q = memchr(p + 1, '>', eol - p - 1))) { + pd->apop_token = p_dupstr(p, q + 1 - p); + } + buffer_consume_upto(&pd->ibuf, eol); + + /* TODO do not check capa again */ + pd->state = POP_CHECK_CAPA0; + buffer_addstr(&pd->obuf, "CAPA\r\n"); + return el_job_setmode(w, EL_WRITING); +} + +static int pop_check_capa(job_t *w, pop_data_t *pd) +{ + const char *p = POP_CHECK_EOL(w, pd); + + if (!pd->multiline) { + if (m_strncmp(pd->ibuf.data, "+OK", 3)) { + pd->cmd_capa = CMD_NOT_AVAILABLE; + pd->cmd_stls = CMD_NOT_AVAILABLE; + goto end; + } + pd->multiline = true; + } else { + p = pd->ibuf.data; + } + + for (;;) { + const char *q = strchr(p, '\n'); + if (!q) { + buffer_consume_upto(&pd->ibuf, p); + return 0; + } + if (p[0] == '.' && p[1] != '.') { + buffer_consume_upto(&pd->ibuf, q); + break; + } + if (m_strcasestart(p, "SASL", &p)) { + p = skipspaces(p); + pd->auth_mechs = p_dupstr(p, q - p); + } else if (m_strcasestart(p, "STLS", NULL)) { + pd->cmd_stls = CMD_AVAILABLE; + } else if (m_strcasestart(p, "UIDL", NULL)) { + pd->cmd_uidl = CMD_AVAILABLE; + } else if (m_strcasestart(p, "TOP", NULL)) { + pd->cmd_top = CMD_AVAILABLE; + } + p = q; + } + + end: + pd->multiline = false; + switch (pd->state) { + case POP_CHECK_CAPA0: + if (!pd->act.has_ssl && (pd->cmd_stls || mod_ssl.force_tls)) { + buffer_addstr(&pd->obuf, "STLS\r\n"); + pd->state = POP_STLS; + return el_job_setmode(w, EL_WRITING); + } + /* FALLTHROUGH */ + case POP_CHECK_CAPA1: + pd->state = POP_AUTHENTICATE; + /* TODO */ + return -1; + + case POP_CHECK_CAPA2: + pd->state = POP_STAT; + return -1; + + default: + return el_job_release(w, EL_ERROR); + } +} + +static int (*pop_actions[])(job_t *, pop_data_t *pd) = { + [POP_CONNECTING] = pop_read_banner, + [POP_CHECK_CAPA0] = pop_check_capa, + NULL, +}; + static int pop_setup(job_t *w, void *cfg) { - w->ptr = pop_data_dup(cfg); - /* FIXME */ return el_job_release(w, EL_ERROR); - return 0; + pop_data_t *pd = w->ptr = pop_data_dup(cfg); + return el_job_connect2(w, &pd->act); } +static int pop_on_event(job_t *w, el_event evt) +{ + pop_data_t *pd = w->ptr; + switch (evt) { + case EL_EVT_RUNNING: + return el_job_setmode(w, EL_READING); + case EL_EVT_IN: + EL_JOB_CHECK(el_job_read(w, &pd->ibuf)); + EL_JOB_CHECK(pop_actions[pd->state](w, pd)); + /* FALLTHROUGH */ + case EL_EVT_OUT: + EL_JOB_CHECK(el_job_write(w, &pd->obuf)); + if (pd->obuf.len == 0) + return el_job_setmode(w, EL_READING); + return 0; + + case EL_EVT_WAKEUP: + return 0; + + default: + abort(); + } +} static void pop_finalize(job_t *w, el_status reason) { + pop_data_t *pd = w->ptr; + switch (pd->state) { + case POP_CONNECTING: + case POP_CHECK_CAPA0: + case POP_STLS: + case POP_CHECK_CAPA1: + case POP_AUTHENTICATE: + case POP_CHECK_CAPA2: + case POP_STAT: + mutt_error(_("Error connecting to server: %s"), pd->act.host); + break; + + case POP_READY: + break; + } + pop_data_reset(pd); pop_data_delete((pop_data_t **)(void *)&w->ptr); } static machine_t const pop_machine = { .name = "POP3", .setup = &pop_setup, + .on_event = &pop_on_event, .finalize = &pop_finalize, };