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Overview
Comment:Use the email content parser to the prototype webmail page.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256:264223fc5981cd27b255e5f4170c2a81c9a24e69622bb6dc29c42c892e7087b2
User & Date: drh 2018-07-13 15:07:13
Context
2018-07-13
16:06
When rendering SQLite log messages to the error log, include the SQL for all busy SQL statements in the log message. check-in: c6ecf21f user: drh tags: trunk
15:07
Use the email content parser to the prototype webmail page. check-in: 264223fc user: drh tags: trunk
10:04
Append -ldl only when needed on the target platform; OpenBSD resolves it from the standard libc. check-in: 7cdb522b user: ashepilko tags: trunk
Changes

Changes to src/db.c.

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}
char *db_column_malloc(Stmt *pStmt, int N){
  return mprintf("%s", db_column_text(pStmt, N));
}
void db_column_blob(Stmt *pStmt, int N, Blob *pBlob){
  blob_append(pBlob, sqlite3_column_blob(pStmt->pStmt, N),
              sqlite3_column_bytes(pStmt->pStmt, N));






}

/*
** Initialize a blob to an ephemeral copy of the content of a
** column in the current row.  The data in the blob will become
** invalid when the statement is stepped or reset.
*/







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}
char *db_column_malloc(Stmt *pStmt, int N){
  return mprintf("%s", db_column_text(pStmt, N));
}
void db_column_blob(Stmt *pStmt, int N, Blob *pBlob){
  blob_append(pBlob, sqlite3_column_blob(pStmt->pStmt, N),
              sqlite3_column_bytes(pStmt->pStmt, N));
}
Blob db_column_text_as_blob(Stmt *pStmt, int N){
  Blob x;
  blob_init(&x, sqlite3_column_text(pStmt->pStmt,N),
            sqlite3_column_bytes(pStmt->pStmt,N));
  return x;
}

/*
** Initialize a blob to an ephemeral copy of the content of a
** column in the current row.  The data in the blob will become
** invalid when the statement is stepped or reset.
*/

Changes to src/smtp.c.

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@ CREATE TABLE IF NOT EXISTS repository.emailbox(
@   euser TEXT,          -- User who received this email
@   edate INT,           -- Date received.  Seconds since 1970
@   efrom TEXT,          -- Who is the email from
@   emsgid INT,          -- Raw email text
@   ets INT,             -- Transcript of the receiving SMTP session
@   estate INT,          -- Unread, read, starred, etc.
@   esubject TEXT        -- Subject line for display

@ );
@
@ -- Information on how to deliver incoming email.
@ CREATE TABLE IF NOT EXISTS repository.emailroute(
@   eaddr TEXT PRIMARY KEY,  -- Email address
@   epolicy TEXT             -- How to handle email sent to this address
@ ) WITHOUT ROWID;
................................................................................
*/
static const char zEmailDrop[] =
@ DROP TABLE IF EXISTS emailblob;
@ DROP TABLE IF EXISTS emailbox;
@ DROP TABLE IF EXISTS emailroute;
@ DROP TABLE IF EXISTS emailqueue;
;











/*
** Populate the schema of a database.
**
**   eForce==0          Fast
**   eForce==1          Run CREATE TABLE statements every time
**   eForce==2          DROP then rerun CREATE TABLE







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@ CREATE TABLE IF NOT EXISTS repository.emailbox(
@   euser TEXT,          -- User who received this email
@   edate INT,           -- Date received.  Seconds since 1970
@   efrom TEXT,          -- Who is the email from
@   emsgid INT,          -- Raw email text
@   ets INT,             -- Transcript of the receiving SMTP session
@   estate INT,          -- Unread, read, starred, etc.
@   esubject TEXT,       -- Subject line for display
@   etags TEXT           -- zero or more tags
@ );
@
@ -- Information on how to deliver incoming email.
@ CREATE TABLE IF NOT EXISTS repository.emailroute(
@   eaddr TEXT PRIMARY KEY,  -- Email address
@   epolicy TEXT             -- How to handle email sent to this address
@ ) WITHOUT ROWID;
................................................................................
*/
static const char zEmailDrop[] =
@ DROP TABLE IF EXISTS emailblob;
@ DROP TABLE IF EXISTS emailbox;
@ DROP TABLE IF EXISTS emailroute;
@ DROP TABLE IF EXISTS emailqueue;
;

#if INTERFACE
/*
** Mailbox message states
*/
#define MSG_UNREAD    0
#define MSG_READ      1
#define MSG_TRASH     2
#endif /* INTERFACE */


/*
** Populate the schema of a database.
**
**   eForce==0          Fast
**   eForce==1          Run CREATE TABLE statements every time
**   eForce==2          DROP then rerun CREATE TABLE

Changes to src/webmail.c.

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*/
static int email_line_length(const char *z){
  int i;
  for(i=0; z[i] && (z[i]!='\n' || z[i+1]==' ' || z[i+1]=='\t'); i++){}
  if( z[i]=='\n' ) i++;
  return i;
}
























/*
** Return a pointer to the first non-whitespace character in z
*/
static const char *firstToken(const char *z){
  while( fossil_isspace(*z) ){
    z++;
................................................................................
                                 /*  123456789 123456 */
      }else if( sqlite3_strnicmp(z2, "quoted-printable", 16)==0 ){
        pBody->encoding = EMAILENC_QUOTED;
      }else{
        pBody->encoding = EMAILENC_NONE;
      }
    }

    if( bAddHeader ) emailtoc_new_header_line(p, z+i);





    i += n;
  }
  if( multipartBody ){
    p->nBody--;
    emailtoc_add_multipart(p, z+i);
  }else{
    pBody->zContent = z+i;
................................................................................
  EmailToc *p,          /* Append the segments here */
  char *z               /* The body component.  zero-terminated */
){
  int nB;               /* Size of the boundary string */
  int iStart;           /* Start of the coding region past boundary mark */
  int i;                /* Loop index */
  char *zBoundary = 0;  /* Boundary marker */









  /* Find the length of the boundary mark. */
  while( fossil_isspace(z[0]) ) z++;
  zBoundary = z;
  for(nB=0; z[nB] && !fossil_isspace(z[nB]); nB++){}
  if( nB==0 ) return;

  z += nB;
  while( fossil_isspace(z[0]) ) z++;
  zBoundary[nB] = 0;
  for(i=iStart=0; z[i]; i++){
    if( z[i]=='\n' && strncmp(z+i+1, zBoundary, nB)==0 ){
      z[i+1] = 0;
      emailtoc_add_multipart_segment(p, z+iStart, 0);
................................................................................
      iStart = i+nB;
      if( z[iStart]=='-' && z[iStart+1]=='-' ) return;
      while( fossil_isspace(z[iStart]) ) iStart++;
      i = iStart;
    }
  }
}


/*
** Compute a table-of-contents (EmailToc) for the email message
** provided on the input.
**
** This routine will cause pEmail to become zero-terminated if it is
** not already.  It will also insert zero characters into parts of
................................................................................
  char *z;
  EmailToc *p = emailtoc_alloc();
  blob_terminate(pEmail);
  z = blob_buffer(pEmail);
  emailtoc_add_multipart_segment(p, z, 1);
  return p;
}




















/*
** COMMAND: test-decode-email
**
** Usage: %fossil test-decode-email FILE
**
** Read an rfc-2822 formatted email out of FILE, then write a decoding
................................................................................
  verify_all_options();
  if( g.argc!=3 ) usage("FILE");
  blob_read_from_file(&email, g.argv[2], ExtFILE);
  p = emailtoc_from_email(&email);
  fossil_print("%d header line and %d content segments\n",
               p->nHdr, p->nBody);
  for(i=0; i<p->nHdr; i++){

    fossil_print("%3d: %s\n", i, p->azHdr[i]);
  }
  for(i=0; i<p->nBody; i++){
    fossil_print("\nBODY %d mime \"%s\" encoding %d:\n",
                 i, p->aBody[i].zMimetype, p->aBody[i].encoding);





    switch( p->aBody[i].encoding ){
      case EMAILENC_B64: {
        int n = 0;
        decodeBase64(p->aBody[i].zContent, &n, p->aBody[i].zContent);
        fossil_print("%s", p->aBody[i].zContent);
        if( n && p->aBody[i].zContent[n-1]!='\n' ) fossil_print("\n");
        break;
................................................................................
** that contains email received by the "fossil smtpd" command.
*/
void webmail_page(void){
  int emailid;
  Stmt q;
  Blob sql;
  int showAll = 0;


  login_check_credentials();
  if( g.zLogin==0 ){
    login_needed(0);
    return;
  }
  if( !db_table_exists("repository","emailbox") ){
    style_header("Webmail Not Available");
    @ <p>This repository is not configured to provide webmail</p>
    style_footer();
    return;
  }
  add_content_sql_commands(g.db);
  emailid = atoi(PD("id","0"));











  if( emailid>0 ){

    blob_init(&sql, 0, 0);
    blob_append_sql(&sql, "SELECT decompress(etxt)"
                          " FROM emailblob WHERE emailid=%d",
                          emailid);
    if( !g.perm.Admin ){
      blob_append_sql(&sql, " AND EXISTS(SELECT 1 FROM emailbox WHERE"
                            " euser=%Q AND emsgid=emailid)", g.zLogin);
    }
    db_prepare_blob(&q, &sql);
    blob_reset(&sql);
    if( db_step(&q)==SQLITE_ROW ){


      style_header("Message %d",emailid);

      @ <pre>%h(db_column_text(&q, 0))</pre>







































      style_footer();
      db_finalize(&q);
      return;
    }
    db_finalize(&q);
  }
  style_header("Webmail");
  blob_init(&sql, 0, 0);
  blob_append_sql(&sql,
        /*    0       1                           2        3        4      5 */
    "SELECT efrom, datetime(edate,'unixepoch'), estate, esubject, emsgid, euser"
    " FROM emailbox"
  );
  if( g.perm.Admin ){
    const char *zUser = P("user");
    if( P("all")!=0 ){
      /* Show all email messages */
      showAll = 1;
    }else{
      style_submenu_element("All", "%R/webmail?all");
      if( zUser ){
        blob_append_sql(&sql, " WHERE euser=%Q", zUser);
      }else{
        blob_append_sql(&sql, " WHERE euser=%Q", g.zLogin);
      }
    }
  }else{


    blob_append_sql(&sql, " WHERE euser=%Q", g.zLogin);
  }
  blob_append_sql(&sql, " ORDER BY edate DESC limit 50");
  db_prepare_blob(&q, &sql);
  blob_reset(&sql);
  @ <ol>
  while( db_step(&q)==SQLITE_ROW ){
    int emailid = db_column_int(&q,4);
    const char *zFrom = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zSubject = db_column_text(&q, 3);
    @ <li>
    if( showAll ){
      const char *zTo = db_column_text(&q,5);
      @ <a href="%R/webmail?user=%t(zTo)">%h(zTo)</a>:
    }

    @ <a href="%R/webmail?id=%d(emailid)">%h(zFrom) &rarr; %h(zSubject)</a>
    @ %h(zDate)
  }
  db_finalize(&q);
  @ </ol>
  style_footer(); 
}







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*/
static int email_line_length(const char *z){
  int i;
  for(i=0; z[i] && (z[i]!='\n' || z[i+1]==' ' || z[i+1]=='\t'); i++){}
  if( z[i]=='\n' ) i++;
  return i;
}

/*
** Look for a parameter of the form NAME=VALUE in the given email
** header line.  Return a copy of VALUE in space obtained from 
** fossil_malloc().  Or return NULL if there is no such parameter.
*/
static char *email_hdr_value(const char *z, const char *zName){
  int nName = (int)strlen(zName);
  int i;
  const char *z2 = strstr(z, zName);
  if( z2==0 ) return 0;
  z2 += nName;
  if( z2[0]!='=' ) return 0;
  z2++;
  if( z2[0]=='"' ){
    z2++;
    for(i=0; z2[i] && z2[i]!='"'; i++){}
    if( z2[i]!='"' ) return 0;
  }else{
    for(i=0; z2[i] && !fossil_isspace(z2[i]); i++){}
  }
  return mprintf("%.*s", i, z2);
}

/*
** Return a pointer to the first non-whitespace character in z
*/
static const char *firstToken(const char *z){
  while( fossil_isspace(*z) ){
    z++;
................................................................................
                                 /*  123456789 123456 */
      }else if( sqlite3_strnicmp(z2, "quoted-printable", 16)==0 ){
        pBody->encoding = EMAILENC_QUOTED;
      }else{
        pBody->encoding = EMAILENC_NONE;
      }
    }
    if( bAddHeader ){
      emailtoc_new_header_line(p, z+i);
    }else if( sqlite3_strnicmp(z+i, "Content-Disposition:", 20)==0 ){
                                /*   123456789 123456789  */
       fossil_free(pBody->zFilename);
       pBody->zFilename = email_hdr_value(z+i, "filename");
    }
    i += n;
  }
  if( multipartBody ){
    p->nBody--;
    emailtoc_add_multipart(p, z+i);
  }else{
    pBody->zContent = z+i;
................................................................................
  EmailToc *p,          /* Append the segments here */
  char *z               /* The body component.  zero-terminated */
){
  int nB;               /* Size of the boundary string */
  int iStart;           /* Start of the coding region past boundary mark */
  int i;                /* Loop index */
  char *zBoundary = 0;  /* Boundary marker */

  /* Skip forward to the beginning of the boundary mark.  The boundary
  ** mark always begins with "--" */
  while( z[0]!='-' || z[1]!='-' ){
    while( z[0] && z[0]!='\n' ) z++;
    if( z[0]==0 ) return;
    z++;
  }

  /* Find the length of the boundary mark. */

  zBoundary = z;
  for(nB=0; z[nB] && !fossil_isspace(z[nB]); nB++){}
  if( nB==0 ) return;

  z += nB;
  while( fossil_isspace(z[0]) ) z++;
  zBoundary[nB] = 0;
  for(i=iStart=0; z[i]; i++){
    if( z[i]=='\n' && strncmp(z+i+1, zBoundary, nB)==0 ){
      z[i+1] = 0;
      emailtoc_add_multipart_segment(p, z+iStart, 0);
................................................................................
      iStart = i+nB;
      if( z[iStart]=='-' && z[iStart+1]=='-' ) return;
      while( fossil_isspace(z[iStart]) ) iStart++;
      i = iStart;
    }
  }
}


/*
** Compute a table-of-contents (EmailToc) for the email message
** provided on the input.
**
** This routine will cause pEmail to become zero-terminated if it is
** not already.  It will also insert zero characters into parts of
................................................................................
  char *z;
  EmailToc *p = emailtoc_alloc();
  blob_terminate(pEmail);
  z = blob_buffer(pEmail);
  emailtoc_add_multipart_segment(p, z, 1);
  return p;
}

/*
** Inplace-unfolding of an email header line.
**
** Actually - this routine works by converting all contiguous sequences
** of whitespace into a single space character.
*/
static void email_hdr_unfold(char *z){
  int i, j;
  char c;
  for(i=j=0; (c = z[i])!=0; i++){
    if( fossil_isspace(c) ){
      c = ' ';
      if( j && z[j-1]==' ' ) continue;
    }
    z[j++] = c;
  }
  z[j] = 0;
}

/*
** COMMAND: test-decode-email
**
** Usage: %fossil test-decode-email FILE
**
** Read an rfc-2822 formatted email out of FILE, then write a decoding
................................................................................
  verify_all_options();
  if( g.argc!=3 ) usage("FILE");
  blob_read_from_file(&email, g.argv[2], ExtFILE);
  p = emailtoc_from_email(&email);
  fossil_print("%d header line and %d content segments\n",
               p->nHdr, p->nBody);
  for(i=0; i<p->nHdr; i++){
    email_hdr_unfold(p->azHdr[i]);
    fossil_print("%3d: %s\n", i, p->azHdr[i]);
  }
  for(i=0; i<p->nBody; i++){
    fossil_print("\nBODY %d mime \"%s\" encoding %d",
                 i, p->aBody[i].zMimetype, p->aBody[i].encoding);
    if( p->aBody[i].zFilename ){
      fossil_print(" filename \"%s\"", p->aBody[i].zFilename);
    }
    fossil_print("\n");
    if( strncmp(p->aBody[i].zMimetype,"text/",5)!=0 ) continue;
    switch( p->aBody[i].encoding ){
      case EMAILENC_B64: {
        int n = 0;
        decodeBase64(p->aBody[i].zContent, &n, p->aBody[i].zContent);
        fossil_print("%s", p->aBody[i].zContent);
        if( n && p->aBody[i].zContent[n-1]!='\n' ) fossil_print("\n");
        break;
................................................................................
** that contains email received by the "fossil smtpd" command.
*/
void webmail_page(void){
  int emailid;
  Stmt q;
  Blob sql;
  int showAll = 0;
  const char *zUser = 0;
  HQuery url;
  login_check_credentials();
  if( g.zLogin==0 ){
    login_needed(0);
    return;
  }
  if( !db_table_exists("repository","emailbox") ){
    style_header("Webmail Not Available");
    @ <p>This repository is not configured to provide webmail</p>
    style_footer();
    return;
  }
  add_content_sql_commands(g.db);
  emailid = atoi(PD("id","0"));
  url_initialize(&url, "webmail");
  if( g.perm.Admin ){
    zUser = P("user");
    if( zUser ){
      url_add_parameter(&url, "user", zUser);
      if( fossil_strcmp(zUser,"*")==0 ){
        showAll = 1;
        zUser = 0;
      }
    }
  }
  if( emailid>0 ){
    style_submenu_element("Index", "%s", url_render(&url,"id",0,0,0));
    blob_init(&sql, 0, 0);
    blob_append_sql(&sql, "SELECT decompress(etxt)"
                          " FROM emailblob WHERE emailid=%d",
                          emailid);
    if( !g.perm.Admin ){
      blob_append_sql(&sql, " AND EXISTS(SELECT 1 FROM emailbox WHERE"
                            " euser=%Q AND emsgid=emailid)", g.zLogin);
    }
    db_prepare_blob(&q, &sql);
    blob_reset(&sql);
    if( db_step(&q)==SQLITE_ROW ){
      Blob msg = db_column_text_as_blob(&q, 0);
      url_add_parameter(&url, "id", P("id"));
      style_header("Message %d",emailid);
      if( PB("raw") ){
        @ <pre>%h(db_column_text(&q, 0))</pre>
        style_submenu_element("Decoded", "%s", url_render(&url,"raw",0,0,0));
      }else{      
        EmailToc *p = emailtoc_from_email(&msg);
        int i, j;
        style_submenu_element("Raw", "%s", url_render(&url,"raw","1",0,0));
        @ <p>
        for(i=0; i<p->nHdr; i++){
          char *z = p->azHdr[i];
          email_hdr_unfold(z);
          for(j=0; z[j] && z[j]!=':'; j++){}
          if( z[j]!=':' ){
            @ %h(z)<br>
          }else{
            z[j] = 0;
            @ <b>%h(z):</b> %h(z+j+1)<br>
          }
        }
        for(i=0; i<p->nBody; i++){
          @ <hr><b>Messsage Body #%d(i): %h(p->aBody[i].zMimetype) \
          if( p->aBody[i].zFilename ){
            @ "%h(p->aBody[i].zFilename)"
          }
          @ </b>
          if( strncmp(p->aBody[i].zMimetype, "text/", 5)!=0 ) continue;
          switch( p->aBody[i].encoding ){
            case EMAILENC_B64: {
              int n = 0;
              decodeBase64(p->aBody[i].zContent, &n, p->aBody[i].zContent);
              break;
            }
            case EMAILENC_QUOTED: {
              int n = 0;
              decodeQuotedPrintable(p->aBody[i].zContent, &n);
              break;
            }
          }
          @ <pre>%h(p->aBody[i].zContent)</pre>
        }
      }      
      style_footer();
      db_finalize(&q);
      return;
    }
    db_finalize(&q);
  }
  style_header("Webmail");
  blob_init(&sql, 0, 0);
  blob_append_sql(&sql,
        /*    0       1                           2        3        4      5 */
    "SELECT efrom, datetime(edate,'unixepoch'), estate, esubject, emsgid, euser"
    " FROM emailbox"
  );
  if( showAll ){
    style_submenu_element("My Emails", "%s", url_render(&url,"user",0,0,0));
  }else if( zUser!=0 ){
    style_submenu_element("All Users", "%s", url_render(&url,"user","*",0,0));
    if( fossil_strcmp(zUser, g.zLogin)!=0 ){
      style_submenu_element("My Emails", "%s", url_render(&url,"user",0,0,0));
    }
    if( zUser ){
      blob_append_sql(&sql, " WHERE euser=%Q", zUser);
    }else{
      blob_append_sql(&sql, " WHERE euser=%Q", g.zLogin);
    }
  }else{
    if( g.perm.Admin ){
      style_submenu_element("All Users", "%s", url_render(&url,"user","*",0,0));
    }
    blob_append_sql(&sql, " WHERE euser=%Q", g.zLogin);
  }
  blob_append_sql(&sql, " ORDER BY edate DESC limit 50");
  db_prepare_blob(&q, &sql);
  blob_reset(&sql);
  @ <ol>
  while( db_step(&q)==SQLITE_ROW ){
    char *zId = db_column_text(&q,4);
    const char *zFrom = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zSubject = db_column_text(&q, 3);
    @ <li>
    if( showAll ){
      const char *zTo = db_column_text(&q,5);
      @ <a href="%s(url_render(&url,"user",zTo,0,0))">%h(zTo)</a>:
    }
    @ <a href="%s(url_render(&url,"id",zId,0,0))">\
    @ %h(zFrom) &rarr; %h(zSubject)</a>
    @ %h(zDate)
  }
  db_finalize(&q);
  @ </ol>
  style_footer(); 
}