Actual source code: google.c
petsc-3.7.5 2017-01-01
2: #include <petscwebclient.h>
3: #pragma clang diagnostic ignored "-Wdeprecated-declarations"
4: #pragma gcc diagnostic ignored "-Wdeprecated-declarations"
6: /*
7: These variables identify the code as a PETSc application to Google.
9: See - http://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software
10: Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey
12: */
13: #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com"
14: #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t"
15: #define PETSC_GOOGLE_API_KEY "AIzaSyDRZsOcySpWVzsUvIBL2UG3J2tcg-MXbyk"
20: /*@C
21: PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token
23: Not collective, only the first process in the MPI_Comm does anything
25: Input Parameters:
26: + comm - MPI communicator
27: . refresh token - obtained with PetscGoogleDriveAuthorize(), if NULL PETSc will first look for one in the options data
28: if not found it will call PetscGoogleDriveAuthorize()
29: - tokensize - size of the output string access_token
31: Output Parameter:
32: . access_token - token that can be passed to PetscGoogleDriveUpload()
34: Options Database:
35: . -google_refresh_token XXX where XXX was obtained from PetscGoogleDriveAuthorize()
37: Level: intermediate
39: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveUpload()
41: @*/
42: PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm,const char refresh_token[],char access_token[],size_t tokensize)
43: {
44: SSL_CTX *ctx;
45: SSL *ssl;
46: int sock;
48: char buff[8*1024],body[1024];
49: PetscMPIInt rank;
50: char *refreshtoken = (char*)refresh_token;
51: PetscBool found;
54: MPI_Comm_rank(comm,&rank);
55: if (!rank) {
56: if (!refresh_token) {
57: PetscBool set;
58: PetscMalloc1(512,&refreshtoken);
59: PetscOptionsGetString(NULL,NULL,"-google_refresh_token",refreshtoken,512,&set);
60: if (!set) {
61: PetscGoogleDriveAuthorize(comm,access_token,refreshtoken,512*sizeof(char));
62: PetscFree(refreshtoken);
63: return(0);
64: }
65: }
66: PetscSSLInitializeContext(&ctx);
67: PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);
68: PetscStrcpy(body,"client_id=");
69: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);
70: PetscStrcat(body,"&client_secret=");
71: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);
72: PetscStrcat(body,"&refresh_token=");
73: PetscStrcat(body,refreshtoken);
74: if (!refresh_token) {PetscFree(refreshtoken);}
75: PetscStrcat(body,"&grant_type=refresh_token");
77: PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
78: PetscSSLDestroyContext(ctx);
79: close(sock);
81: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
82: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token");
83: }
84: return(0);
85: }
87: #include <sys/stat.h>
91: /*@C
92: PetscGoogleDriveUpload - Loads a file to the Google Drive
94: Not collective, only the first process in the MPI_Comm uploads the file
96: Input Parameters:
97: + comm - MPI communicator
98: . access_token - obtained with PetscGoogleDriveRefresh(), pass NULL to have PETSc generate one
99: - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive
101: Options Database:
102: . -google_refresh_token XXX
104: Usage Patterns:
105: With PETSc option -google_refresh_token XXX given
106: PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction
108: Without PETSc option -google_refresh_token XXX given
109: PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their processor
111: With PETSc option -google_refresh_token XXX given
112: PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token));
113: PetscGoogleDriveUpload(comm,access_token,filename);
115: With refresh token entered in some way by the user
116: PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token));
117: PetscGoogleDriveUpload(comm,access_token,filename);
119: PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token));
120: PetscGoogleDriveUpload(comm,access_token,filename);
122: Level: intermediate
124: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh()
126: @*/
127: PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm,const char access_token[],const char filename[])
128: {
129: SSL_CTX *ctx;
130: SSL *ssl;
131: int sock;
133: char head[1024],buff[8*1024],*body,*title;
134: PetscMPIInt rank;
135: struct stat sb;
136: size_t len,blen,rd;
137: FILE *fd;
140: MPI_Comm_rank(comm,&rank);
141: if (!rank) {
142: PetscStrcpy(head,"Authorization: Bearer ");
143: PetscStrcat(head,access_token);
144: PetscStrcat(head,"\r\n");
145: PetscStrcat(head,"uploadType: multipart\r\n");
147: stat(filename,&sb);
148: if (ierr) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to stat file: %s",filename);
149: len = 1024 + sb.st_size;
150: PetscMalloc1(len,&body);
151: PetscStrcpy(body,"--foo_bar_baz\r\n"
152: "Content-Type: application/json\r\n\r\n"
153: "{");
154: PetscPushJSONValue(body,"title",filename,len);
155: PetscStrcat(body,",");
156: PetscPushJSONValue(body,"mimeType","text.html",len);
157: PetscStrcat(body,",");
158: PetscPushJSONValue(body,"description","a file",len);
159: PetscStrcat(body,"}\r\n\r\n"
160: "--foo_bar_baz\r\n"
161: "Content-Type: text/html\r\n\r\n");
162: PetscStrlen(body,&blen);
163: fd = fopen (filename, "r");
164: if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to open file: %s",filename);
165: rd = fread (body+blen, sizeof (unsigned char), sb.st_size, fd);
166: if (rd != (size_t) 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);
167: fclose(fd);
168: body[blen + rd] = 0;
169: PetscStrcat(body,"\r\n\r\n"
170: "--foo_bar_baz\r\n");
171: PetscSSLInitializeContext(&ctx);
172: PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);
173: PetscHTTPSRequest("POST","www.googleapis.com/upload/drive/v2/files/",head,"multipart/related; boundary=\"foo_bar_baz\"",body,ssl,buff,sizeof(buff));
174: PetscFree(body);
175: PetscSSLDestroyContext(ctx);
176: close(sock);
177: PetscStrstr(buff,"\"title\"",&title);
178: if (!title) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Upload of file %s failed",filename);
179: }
180: return(0);
181: }
183: #if defined(PETSC_HAVE_UNISTD_H)
184: #include <unistd.h>
185: #endif
189: /*@C
190: PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc
192: Not collective, only the first process in MPI_Comm does anything
194: Input Parameters:
195: + comm - the MPI communicator
196: - tokensize - size of the token arrays
198: Output Parameters:
199: + access_token - can be used with PetscGoogleDriveUpload() for this one session
200: - refresh_token - can be used for ever to obtain new access_tokens with PetscGoogleDriveRefresh(), guard this like a password
201: it gives access to your Google Drive
203: Notes: This call requires stdout and stdin access from process 0 on the MPI communicator
205: You can run src/sys/webclient/examples/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to
206: PETSc programs with -google_refresh_token XXX
208: Level: intermediate
210: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten()
212: @*/
213: PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize)
214: {
215: SSL_CTX *ctx;
216: SSL *ssl;
217: int sock;
219: char buff[8*1024],*ptr,body[1024];
220: PetscMPIInt rank;
221: size_t len;
222: PetscBool found;
225: MPI_Comm_rank(comm,&rank);
226: if (!rank) {
227: if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output");
228: PetscPrintf(comm,"Cut and paste the following into your browser:\n\n"
229: "https://accounts.google.com/o/oauth2/auth?"
230: "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&"
231: "redirect_uri=urn:ietf:wg:oauth:2.0:oob&"
232: "response_type=code&"
233: "client_id="
234: PETSC_GOOGLE_CLIENT_ID
235: "\n\n");
236: PetscPrintf(comm,"Paste the result here:");
237: ptr = fgets(buff, 1024, stdin);
238: if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
239: PetscStrlen(buff,&len);
240: buff[len-1] = 0; /* remove carriage return at end of line */
242: PetscSSLInitializeContext(&ctx);
243: PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);
244: PetscStrcpy(body,"code=");
245: PetscStrcat(body,buff);
246: PetscStrcat(body,"&client_id=");
247: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);
248: PetscStrcat(body,"&client_secret=");
249: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);
250: PetscStrcat(body,"&redirect_uri=urn:ietf:wg:oauth:2.0:oob&");
251: PetscStrcat(body,"grant_type=authorization_code");
253: PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
254: PetscSSLDestroyContext(ctx);
255: close(sock);
257: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
258: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token");
259: PetscPullJSONValue(buff,"refresh_token",refresh_token,tokensize,&found);
260: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return refresh_token");
262: PetscPrintf(comm,"Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n");
263: PetscPrintf(comm,"programs with the option -google_refresh_token %s\n",refresh_token);
264: PetscPrintf(comm,"to access Google Drive automatically\n");
265: }
266: return(0);
267: }
272: /*@C
273: PetscURLShorten - Uses Google's service to get a short url for a long url
275: Input Parameters:
276: + url - long URL you want shortened
277: - lenshorturl - length of buffer to contain short URL
279: Output Parameter:
280: . shorturl - the shortened URL
282: Level: intermediate
284: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscGoogleDriveAuthorize()
285: @*/
286: PetscErrorCode PetscURLShorten(const char url[],char shorturl[],size_t lenshorturl)
287: {
288: SSL_CTX *ctx;
289: SSL *ssl;
290: int sock;
292: char buff[1024],body[512],post[1024];
293: PetscBool found;
296: PetscSSLInitializeContext(&ctx);
297: PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);
298: PetscStrcpy(body,"{");
299: PetscPushJSONValue(body,"longUrl",url,sizeof(body)-2);
300: PetscStrcat(body,"}");
301: PetscSNPrintf(post,sizeof(post),"www.googleapis.com/urlshortener/v1/url?key=%s",PETSC_GOOGLE_API_KEY);
302: PetscHTTPSRequest("POST",post,NULL,"application/json",body,ssl,buff,sizeof(buff));
303: PetscSSLDestroyContext(ctx);
304: close(sock);
306: PetscPullJSONValue(buff,"id",shorturl,lenshorturl,&found);
307: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return short URL");
308: return(0);
309: }