1 2 #include <petscwebclient.h> 3 4 /* 5 These variables identify the code as a PETSc application to Google. 6 7 See - http://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software 8 Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey 9 10 */ 11 #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com" 12 #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t" 13 14 15 #undef __FUNCT__ 16 #define __FUNCT__ "PetscGoogleDriveRefresh" 17 /*@C 18 PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token 19 20 Not collective, only the first process in the MPI_Comm does anything 21 22 Input Parameters: 23 + comm - MPI communicator 24 . refresh token - obtained with PetscGoogleDriveAuthorize(), if NULL PETSc will first look for one in the options data 25 if not found it will call PetscGoogleDriveAuthorize() 26 - tokensize - size of the output string access_token 27 28 Output Parameter: 29 . access_token - token that can be passed to PetscGoogleDriveUpload() 30 31 Options Database: 32 . -google_refresh_token XXX where XXX was obtained from PetscGoogleDriveAuthorize() 33 34 35 .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveUpload() 36 37 @*/ 38 PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm,const char refresh_token[],char access_token[],size_t tokensize) 39 { 40 SSL_CTX *ctx; 41 SSL *ssl; 42 int sock; 43 PetscErrorCode ierr; 44 char buff[8*1024],body[1024],*access,*ctmp; 45 PetscMPIInt rank; 46 char *refreshtoken = (char*)refresh_token; 47 48 PetscFunctionBegin; 49 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 50 if (!rank) { 51 if (!refresh_token) { 52 PetscBool set; 53 ierr = PetscMalloc1(512,&refreshtoken);CHKERRQ(ierr); 54 ierr = PetscOptionsGetString(NULL,"-google_refresh_token",refreshtoken,512,&set);CHKERRQ(ierr); 55 if (!set) { 56 ierr = PetscGoogleDriveAuthorize(comm,access_token,refreshtoken,512*sizeof(char));CHKERRQ(ierr); 57 ierr = PetscFree(refreshtoken);CHKERRQ(ierr); 58 PetscFunctionReturn(0); 59 } 60 } 61 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 62 ierr = PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 63 ierr = PetscStrcpy(body,"client_id=");CHKERRQ(ierr); 64 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);CHKERRQ(ierr); 65 ierr = PetscStrcat(body,"&client_secret=");CHKERRQ(ierr); 66 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);CHKERRQ(ierr); 67 ierr = PetscStrcat(body,"&refresh_token=");CHKERRQ(ierr); 68 ierr = PetscStrcat(body,refreshtoken);CHKERRQ(ierr); 69 if (!refresh_token) {ierr = PetscFree(refreshtoken);CHKERRQ(ierr);} 70 ierr = PetscStrcat(body,"&grant_type=refresh_token");CHKERRQ(ierr); 71 72 ierr = PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 73 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 74 close(sock); 75 76 ierr = PetscStrstr(buff,"\"access_token\" : \"",&access);CHKERRQ(ierr); 77 if (!access) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Did not receive access token from Google"); 78 access += 18; 79 ierr = PetscStrchr(access,'\"',&ctmp);CHKERRQ(ierr); 80 if (!ctmp) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Access token from Google is misformed"); 81 *ctmp = 0; 82 ierr = PetscStrncpy(access_token,access,tokensize);CHKERRQ(ierr); 83 *ctmp = '\"'; 84 } 85 PetscFunctionReturn(0); 86 } 87 88 #include <sys/stat.h> 89 90 #undef __FUNCT__ 91 #define __FUNCT__ "PetscGoogleDriveUpload" 92 /*@C 93 PetscGoogleDriveUpload - Loads a file to the Google Drive 94 95 Not collective, only the first process in the MPI_Comm uploads the file 96 97 Input Parameters: 98 + comm - MPI communicator 99 . access_token - obtained with PetscGoogleDriveRefresh(), pass NULL to have PETSc generate one 100 - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive 101 102 Options Database: 103 . -google_refresh_token XXX 104 105 Usage Patterns: 106 With PETSc option -google_refresh_token XXX given 107 PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction 108 109 Without PETSc option -google_refresh_token XXX given 110 PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their processor 111 112 With PETSc option -google_refresh_token XXX given 113 PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token)); 114 PetscGoogleDriveUpload(comm,access_token,filename); 115 116 With refresh token entered in some way by the user 117 PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token)); 118 PetscGoogleDriveUpload(comm,access_token,filename); 119 120 PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token)); 121 PetscGoogleDriveUpload(comm,access_token,filename); 122 123 .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh() 124 125 @*/ 126 PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm,const char access_token[],const char filename[]) 127 { 128 SSL_CTX *ctx; 129 SSL *ssl; 130 int sock; 131 PetscErrorCode ierr; 132 char head[1024],buff[8*1024],*body,*title; 133 PetscMPIInt rank; 134 struct stat sb; 135 size_t len,blen,rd; 136 FILE *fd; 137 138 PetscFunctionBegin; 139 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 140 if (!rank) { 141 ierr = PetscStrcpy(head,"Authorization: Bearer ");CHKERRQ(ierr); 142 ierr = PetscStrcat(head,access_token);CHKERRQ(ierr); 143 ierr = PetscStrcat(head,"\r\n");CHKERRQ(ierr); 144 ierr = PetscStrcat(head,"uploadType: multipart\r\n");CHKERRQ(ierr); 145 146 ierr = stat(filename,&sb); 147 if (ierr) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to stat file: %s",filename); 148 len = 1024 + sb.st_size; 149 ierr = PetscMalloc1(len,&body);CHKERRQ(ierr); 150 ierr = PetscStrcpy(body,"--foo_bar_baz\r\n" 151 "Content-Type: application/json\r\n\r\n" 152 "{" 153 "\"title\": \""); 154 ierr = PetscStrcat(body,filename); 155 ierr = PetscStrcat(body,"\"," 156 "\"mimeType\": \"text.html\"," 157 "\"description\": \" a file\"" 158 "}\r\n\r\n" 159 "--foo_bar_baz\r\n" 160 "Content-Type: text/html\r\n\r\n"); 161 ierr = PetscStrlen(body,&blen);CHKERRQ(ierr); 162 fd = fopen (filename, "r"); 163 if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to open file: %s",filename); 164 rd = fread (body+blen, sizeof (unsigned char), sb.st_size, fd); 165 if (rd != sb.st_size) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to read entire file: %s %d %d",filename,(int)rd,sb.st_size); 166 fclose(fd); 167 body[blen + rd] = 0; 168 ierr = PetscStrcat(body,"\r\n\r\n" 169 "--foo_bar_baz\r\n"); 170 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 171 ierr = PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 172 ierr = PetscHTTPSRequest("POST","www.googleapis.com/upload/drive/v2/files/",head,"multipart/related; boundary=\"foo_bar_baz\"",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 173 ierr = PetscFree(body);CHKERRQ(ierr); 174 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 175 close(sock); 176 ierr = PetscStrstr(buff,"\"title\"",&title);CHKERRQ(ierr); 177 if (!title) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Upload of file %s failed",filename); 178 } 179 PetscFunctionReturn(0); 180 } 181 182 #undef __FUNCT__ 183 #define __FUNCT__ "PetscGoogleDriveAuthorize" 184 /*@C 185 PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc 186 187 Not collective, only the first process in MPI_Comm does anything 188 189 Input Parameters: 190 + comm - the MPI communicator 191 - tokensize - size of the token arrays 192 193 Output Parameters: 194 + access_token - can be used with PetscGoogleDriveUpload() for this one session 195 - refresh_token - can be used for ever to obtain new access_tokens with PetscGoogleDriveRefresh(), guard this like a password 196 it gives access to your Google Drive 197 198 Notes: This call requires stdout and stdin access from process 0 on the MPI communicator 199 200 You can run src/sys/webclient/examples/tutorials/obtainrefreshtoken to get a refresh token and then in the future pass it to 201 PETSc programs with -google_refresh_token XXX 202 203 .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten() 204 205 @*/ 206 PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize) 207 { 208 SSL_CTX *ctx; 209 SSL *ssl; 210 int sock; 211 PetscErrorCode ierr; 212 char buff[8*1024],*ptr,body[1024],*access,*refresh,*ctmp; 213 PetscMPIInt rank; 214 size_t len; 215 216 PetscFunctionBegin; 217 ierr = PetscPrintf(comm,"Cut and paste the following into your browser:\n\n" 218 "https://accounts.google.com/o/oauth2/auth?" 219 "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&" 220 "redirect_uri=urn:ietf:wg:oauth:2.0:oob&" 221 "response_type=code&" 222 "client_id=" 223 PETSC_GOOGLE_CLIENT_ID 224 "\n\n");CHKERRQ(ierr); 225 ierr = PetscPrintf(comm,"Paste the result here:");CHKERRQ(ierr); 226 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 227 if (!rank) { 228 ptr = fgets(buff, 1024, stdin); 229 if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno); 230 ierr = PetscStrlen(buff,&len);CHKERRQ(ierr); 231 buff[len-1] = 0; /* remove carriage return at end of line */ 232 233 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 234 ierr = PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 235 ierr = PetscStrcpy(body,"code=");CHKERRQ(ierr); 236 ierr = PetscStrcat(body,buff);CHKERRQ(ierr); 237 ierr = PetscStrcat(body,"&client_id=");CHKERRQ(ierr); 238 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);CHKERRQ(ierr); 239 ierr = PetscStrcat(body,"&client_secret=");CHKERRQ(ierr); 240 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);CHKERRQ(ierr); 241 ierr = PetscStrcat(body,"&redirect_uri=urn:ietf:wg:oauth:2.0:oob&");CHKERRQ(ierr); 242 ierr = PetscStrcat(body,"grant_type=authorization_code");CHKERRQ(ierr); 243 244 ierr = PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 245 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 246 close(sock); 247 248 ierr = PetscStrstr(buff,"\"access_token\" : \"",&access);CHKERRQ(ierr); 249 if (!access) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Did not receive access token from Google"); 250 access += 18; 251 ierr = PetscStrchr(access,'\"',&ctmp);CHKERRQ(ierr); 252 if (!ctmp) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Access token from Google is misformed"); 253 *ctmp = 0; 254 ierr = PetscStrncpy(access_token,access,tokensize);CHKERRQ(ierr); 255 *ctmp = '\"'; 256 257 ierr = PetscStrstr(buff,"\"refresh_token\" : \"",&refresh);CHKERRQ(ierr); 258 if (!refresh) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Did not receive refresh token from Google"); 259 refresh += 19; 260 ierr = PetscStrchr(refresh,'\"',&ctmp);CHKERRQ(ierr); 261 if (!ctmp) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Refresh token from Google is misformed"); 262 *ctmp = 0; 263 ierr = PetscStrncpy(refresh_token,refresh,tokensize);CHKERRQ(ierr); 264 265 ierr = PetscPrintf(comm,"Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n");CHKERRQ(ierr); 266 ierr = PetscPrintf(comm,"programs with the option -google_refresh_token %d\n",refresh);CHKERRQ(ierr); 267 ierr = PetscPrintf(comm,"to access Google Drive automatically\n");CHKERRQ(ierr); 268 } 269 PetscFunctionReturn(0); 270 } 271 272 273 #undef __FUNCT__ 274 #define __FUNCT__ "PetscURLShorten" 275 /*@C 276 PetscURLShorten - Uses Google's service to get a short url for a long url 277 278 Input Parameters: 279 + url - long URL you want shortened 280 - lenshorturl - length of buffer to contain short URL 281 282 Output Parameter: 283 . shorturl - the shortened URL 284 285 .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscGoogleDriveAuthorize() 286 @*/ 287 PetscErrorCode PetscURLShorten(const char url[],char shorturl[],size_t lenshorturl) 288 { 289 SSL_CTX *ctx; 290 SSL *ssl; 291 int sock; 292 PetscErrorCode ierr; 293 char buff[1024],body[512],*sub1,*sub2; 294 295 PetscFunctionBegin; 296 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 297 ierr = PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 298 ierr = PetscSNPrintf(body,512,"{\"longUrl\": \"%s\"}",url);CHKERRQ(ierr); 299 ierr = PetscHTTPSRequest("POST","www.googleapis.com/urlshortener/v1/url",NULL,"application/json",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 300 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 301 close(sock); 302 ierr = PetscStrstr(buff,"\"id\": \"",&sub1);CHKERRQ(ierr); 303 if (sub1) { 304 sub1 += 7; 305 ierr = PetscStrstr(sub1,"\"",&sub2);CHKERRQ(ierr); 306 if (!sub2) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google did not shorten URL"); 307 sub2[0] = 0; 308 ierr = PetscStrncpy(shorturl,sub1,lenshorturl);CHKERRQ(ierr); 309 } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google did not shorten URL"); 310 PetscFunctionReturn(0); 311 } 312 313